VANGUARD TRUSTEES EQUITY FUND
497, 1998-05-05
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===========================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form N-1A

                   REGISTRATION STATEMENT (NO. 2-65955) UNDER
                           THE SECURITIES ACT OF 1933
                           Pre-Effective Amendment No
                                       
                       Post Effective Amendment No. 22
                                       and

               REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
                                   ACT OF 1940
                                       
                              Amendment No. 21

                         VANGUARD/TRUSTEES' EQUITY FUND
               (Exact Name of Registrant as Specified in Charter)

                      P.O. Box 2600, Valley Forge, PA 19482
                     (Address of Principal Executive Office)

                  Registrant's Telephone Number (610) 669-1000

                          Raymond J. Klapinsky, Esquire
                                  P.O. Box 876
                             Valley Forge, PA 19482

                It is proposed that this filing become effective:

               It is proposed that the amendment become effective:
  
         on April 30, 1998, pursuant to paragraph (b) of Rule 485 of the
                          Securities Act of 1933.

                  Approximate Date of Proposed Public Offering:
   As soon as practicable after this Registration Statement becomes effective.
 
We have  elected  to  register  an  indefinite  number  of  shares  pursuant  to
Regulation  24f-2 under the  Investment  Company Act of 1940.  We filed our Rule
24f-2 Notice for the year ended December 31, 1997 on March 30, 1998.

================================================================================
<PAGE>
                         VANGUARD TRUSTEES' EQUITY FUND

                              CROSS REFERENCE SHEET

<TABLE>
<CAPTION>
<S>            <C>                                                    <C>

Form N-1A
Item Number                                                            Location in Prospectus
   Item 1.     Cover Page..............................................Cover Page
   Item 2.     Synopsis                                                Not Applicable
   Item 3.     Condensed Financial Information                         Financial Highlights
   Item 4.     General Description of Registrant                       The Fund's Objectives; Who Should
                                                                       Invest; Investment Strategy;
                                                                       Investment Policies; Investment
                                                                       Limitations; Investment Performance;
                                                                       General Information
   Item 5.     Management of the Fund                                  The Fund and Vanguard

   Item 5A.    Management's Discussion of Fund Performance.............Herein incorporated by reference to
                                                                       Registrant's Annual Reports to
                                                                       Shareholders dated December 31, 1997
                                                                       filed with the Securities and Exchange
                                                                       Commission's EDGAR system on February
                                                                       20, 1998 (U.S. Portfolio) & March 2,
                                                                       1998 (International Value
                                                                       Portfolio)
   Item 6.     Capital Stock and Other Securities......................Buying Shares; Redeeming Shares; Share
                                                                       Price; Dividends, Capital Gains and
                                                                       Taxes; Distribution Options; General
                                                                       Information
   Item 7.     Purchase of Securities Being Offered                    Cover Page; Buying Shares
   Item 8.     Redemption or Repurchase                                Redeeming Shares
   Item 9.     Pending Legal Proceedings                               Not Applicable

Form N-1A                                                              Location in Statement
Item Number                                                            of Additional Information
   Item 10.    Cover Page..............................................Cover Page
   Item 11.    Table of Contents                                       Cover Page
   Item 12.    General Information and History                         Investment Objectives and Policies;
                                                                       General Information
   Item 13.    Investment Objective and Policies                       Investment Objectives and Policies;
                                                                       Investment Limitations

   Item 14.    Management of the Registrant............................Management of the Fund; Investment
                                                                       Advisory Services
   Item 15.    Control Persons and Principal Holders of
               Securities                                              Management of the Fund; General
                                                                       Information
   Item 16.    Investment Advisory and Other Services                  Management of the Fund; Investment
                                                                       Advisory Services
   Item 17.    Brokerage Allocation                                    Not Applicable
   Item 18.    Capital Stock and Other Securities                      General Information; Financial
                                                                       Statements
   Item 19.    Purchase, Redemption and Pricing of Securities
               Being Offered                                           Purchase of Shares; Redemption of
                                                                       Shares;
   Item 20.    Tax Status                                              Appendix
   Item 21.    Underwriters                                            Not Applicable

   Item 22.    Calculation of Performance Data.........................Not Applicable
   Item 23.    Financial Statements                                    Financial Statements
</TABLE>

<PAGE>




VANGUARD/TRUSTEES'
EQUITY FUND-
U.S. PORTFOLIO
Prospectus
April 30, 1998

A Portfolio of Vanguard/
Trustees' Equity Fund

This  prospectus  contains  financial data for the Portfolio  through the fiscal
year ended December 31, 1997.

[VANGUARD GROUP LOGO]

VANGUARD/TRUSTEES' EQUITY FUND-
U.S. PORTFOLIO                           A Growth and Income Stock Mutual Fund

CONTENTS
Portfolio Profile                             1
Portfolio Expenses                            2
Financial Highlights                          3
A Word About Risk                             4
The Portfolio's Objectives                    4
Who Should Invest                             4
Investment Strategy                           5
Investment Policies                           7
Investment Limitations                        8
Investment Performance                        9
Share Price                                   9
Dividends, Capital Gains, and Taxes          10
The Portfolio and Vanguard                   10
Investment Adviser                           11
General Information                          12
Investing with Vanguard                      13
Services and Account Features                13
Types of Accounts                            14
Distribution Options                         15
Buying Shares                                16
Redeeming Shares                             17
Transferring Registration                    20
Portfolio and Account Updates                20
Prospectus Postscript                        22
Investment Primer                            23
Glossary                      Inside Back Cover

INVESTMENT OBJECTIVES AND POLICIES

Vanguard/Trustees' Equity Fund-U.S. Portfolio (the "Portfolio") is a diversified
mutual fund, a part of Vanguard/Trustees'  Equity Fund (the "Fund"), an open-end
investment company.

   The Portfolio seeks to provide  long-term  capital growth and a modest amount
of income by investing in the stocks of U.S. companies.  The Portfolio uses both
"value" and "growth" investment strategies.  About 50% to 70% of the Portfolio's
assets are  invested in companies  whose  stocks,  according to the  Portfolio's
adviser, are undervalued; these companies tend to be currently out of favor with
investors.  The remaining 30% to 50% of assets are invested in companies  with a
history of sales and earnings growth or, the adviser believes, an expectation of
growth.

   IT IS IMPORTANT TO NOTE THAT THE  PORTFOLIO'S  SHARES ARE NOT  GUARANTEED  OR
INSURED  BY THE FDIC OR ANY  OTHER  AGENCY OF THE U.S.  GOVERNMENT.  AS WITH ANY
INVESTMENT IN COMMON STOCKS,  WHICH ARE SUBJECT TO WIDE  FLUCTUATIONS  IN MARKET
VALUE, YOU COULD LOSE MONEY BY INVESTING IN THE PORTFOLIO.

FEES AND EXPENSES

The Portfolio is offered on a no-load  basis,  which means that you pay no sales
commissions  or 12b-1  marketing  fees.  You will,  however,  incur expenses for
investment  advisory,  management,  administrative,  and distribution  services,
which are included in the expense ratio.

ADDITIONAL INFORMATION ABOUT THE PORTFOLIO

A Statement of Additional  Information  (dated April 30, 1998)  containing  more
information  about the Portfolio is, by reference,  part of this  prospectus and
may be obtained  without  charge by writing to  Vanguard,  calling our  Investor
Information  Department  at  1-800-662-7447,  or  visiting  the  Securities  and
Exchange Commission's website (www.sec.gov).

WHY READING THIS PROSPECTUS IS IMPORTANT

This  prospectus  explains  the  objectives,  risks,  and  strategy  of the U.S.
Portfolio of  Vanguard/Trustees'  Equity Fund.  To highlight  terms and concepts
important to mutual fund investors,  we have provided "Plain Talk"  explanations
along the way.  Reading  the  prospectus  will help you to  decide  whether  the
Portfolio is the right  investment  for youR NEEDS.  We suggest that you keep it
for future reference.

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION,  NOR HAS THE SECURITIES AND EXCHANGE COMMISSION PASSED UPON
THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY
IS A CRIMINAL OFFENSE.

<PAGE>

PORTFOLIO PROFILE            Vanguard/Trustees' Equity Fund-U.S. Portfolio

WHO SHOULD INVEST (page 4)

   o  Investors  seeking a growth  and  income  stock  mutual  fund as part of a
      balanced and diversified investment program.

   o  Investors  seeking  capital  growth and some income over the long term--at
      least five years.

   o  Investors  seeking a fund that  employs  both value and growth  investment
      strategies.

WHO SHOULD NOT INVEST

   o  Investors seeking significant current income.

   o  Investors unwilling to accept significant fluctuations in share price.

RISKS OF THE PORTFOLIO (pages 4-8)

The Portfolio's  total return will fluctuate within a wide range, so an investor
could lose money over short or even extended  periods.  The Portfolio is subject
to manager risk (the chance that poor  security  selection  will cause it to lag
the stock market as a whole) and to objective risk (the chance that returns from
either value stocks or growth  stocks will trail  returns from the overall stock
market).

DIVIDENDS AND CAPITAL GAINS (page 10)

Dividends  are paid in June and  December.  Capital  gains,  if any, are paid in
December.

INVESTMENT ADVISER (page 11)

Geewax, Terker & Company, Phoenixville, Pa.

INCEPTION DATE: January 31, 1980


NET ASSETS AS OF 12/31/1997: $174 million

PORTFOLIO'S EXPENSE RATIO FOR THE YEAR ENDED 12/31/1997: 0.53%


LOADS, 12B-1 MARKETING FEES: None

SUITABLE FOR IRAS: Yes

MINIMUM INITIAL INVESTMENT:  $3,000;  $1,000 for IRAs and custodial accounts for
minors

NEWSPAPER ABBREVIATION: TrUS

VANGUARD FUND NUMBER: 025

CUSIP NUMBER: 921939104

QUOTRON SYMBOL: VTRSX.Q

ACCOUNT FEATURES (page 13)

   o  Telephone Redemption

   o  Vanguard Direct Deposit Service(TM)

   o  Vanguard Automatic Exchange Service(SM)

   o  Vanguard Fund Express(R)

   o  Vanguard Dividend Express(SM)

<TABLE>
<CAPTION>


AVERAGE ANNUAL TOTAL RETURNS--YEARS ENDED DECEMBER 31, 1997
<S>                      <C>      <C>      <C>
                         1 YEAR   5 YEARS  10 YEARS
                         --------------------------
U.S. Portfolio            29.5%    18.7%     15.6%
S&P 500 Index             33.4     20.3      18.1
</TABLE>

QUARTERLY RETURNS (%) 1988-1997 (intended to show volatility of returns)

                                    [CHART]

IN EVALUATING  PAST  PERFORMANCE,  REMEMBER THAT IT IS NOT  INDICATIVE OF FUTURE
PERFORMANCE  AND THAT RETURNS FROM STOCKS BEFORE  ADJUSTING  FOR INFLATION  WERE
RELATIVELY  HIGH  DURING THE  PERIODS  SHOWN.  PERFORMANCE  FIGURES  INCLUDE THE
REINVESTMENT OF ANY DIVIDEND AND CAPITAL GAINS DISTRIBUTIONS.  THE RETURNS SHOWN
ARE NET OF EXPENSES, BUT THEY DO NOT REFLECT INCOME TAXES AN INVESTOR WOULD HAVE
INCURRED.  NOTE,  TOO, THAT BOTH THE RETURN AND PRINCIPAL VALUE OF AN INVESTMENT
WILL FLUCTUATE,  SO THAT INVESTORS' SHARES, WHEN REDEEMED,  MAY BE WORTH MORE OR
LESS THAN THEIR ORIGINAL COST.

                                  1

<PAGE>

PORTFOLIO EXPENSES

The examples  below are designed to help you  understand  the various  costs you
would bear, directly or indirectly, as an investor in the Portfolio.

   As noted in this table,  you do not pay fees of any kind when you buy,  sell,
or exchange shares of the Portfolio:

SHAREHOLDER TRANSACTION EXPENSES
Sales Load Imposed on Purchases:                  None
Sales Load Imposed on Reinvested Dividends:       None
Redemption Fees:                                  None
Exchange Fees:                                    None

   The next table  illustrates the operating  expenses that you would incur as a
shareholder of the Portfolio.  These expenses are deducted from the  Portfolio's
income before it is paid to you.  Expenses include  investment  advisory fees as
well  as  the  costs  of  maintaining  accounts,  administering  the  Portfolio,
providing shareholder services, and other activities.  The expenses shown in the
table are based upon those incurred in the fiscal year ended December 31, 1997.

                           PLAIN TALK ABOUT

                        THE COSTS OF INVESTING

          Costs are an  important  consideration  in choosing a mutual
          fund. That's because you, as a shareholder, pay the costs of
          operating a fund plus any transaction  costs associated with
          buying, selling, or exchanging shares. These costs can erode
          a  substantial  portion  of  the  gross  income  or  capital
          appreciation   a  fund  achieves.   Even   seemingly   small
          differences in fund expenses can, over time, have a dramatic
          impact on a fund's performance.
<TABLE>
<S>                                                  <C>        <C>

ANNUAL PORTFOLIO OPERATING EXPENSES
Management and Administrative Expenses:                          0.25%
Investment Advisory Expenses:                                    0.22%
12b-1 Marketing Fees:                                             None
Other Expenses
   Marketing and Distribution Costs:                   0.02%
   Miscellaneous Expenses (e.g., Taxes, Auditing):     0.04%
Total Other Expenses:                                            0.06%
                                                                 ----
         TOTAL OPERATING EXPENSES (EXPENSE RATIO):               0.53%
                                                                 ====

</TABLE>

   The  following  example is intended to help you compare the cost of investing
in the  Portfolio  with  the  cost  of  investing  in  other  mutual  funds,  by
illustrating  the  hypothetical  expenses  that  you  would  incur  on a  $1,000
investment  over various  periods.  The example  assumes that (1) the  Portfolio
provides a return of 5% a year and (2) you redeem your  investment at the end of
each period.
<TABLE>
<CAPTION>

                      -----------------------------------
<S>                   <C>      <C>      <C>      <C>
                      1 YEAR   3 YEARS  5 YEARS  10 YEARS
                      -----------------------------------
                        $5       $17      $30      $66
                      -----------------------------------
</TABLE>

THIS EXAMPLE  SHOULD NOT BE CONSIDERED A  REPRESENTATION  OF ACTUAL  EXPENSES OR
PERFORMANCE  FROM THE PAST OR FOR THE FUTURE,  WHICH MAY BE HIGHER OR LOWER THAN
THOSE SHOWN.

                           PLAIN TALK ABOUT

                            FUND EXPENSES

          All mutual funds have operating  expenses.  These  expenses,
          which are deducted from a fund's gross income, are expressed
          as a  percentage  of the net  assets of the  fund.  The U.S.
          Portfolio's  expense ratio in fiscal year 1997 was 0.53%, or
          $5.30 per $1,000 of average net assets.  The average  growth
          and income equity mutual fund had expenses in 1997 of 1.20%,
          or $12 per $1,000 of average net assets, according to Lipper
          Analytical  Services,  which  reports  on  the  mutual  fund
          industry.

                                  2

<PAGE>

FINANCIAL HIGHLIGHTS

The  following  financial  highlights  table  shows  the  results  for  a  share
outstanding  of the  Portfolio  for each of the fiscal years in the decade ended
December  31, 1997.  The  financial  statements  that  include  these  financial
highlights were audited by Price Waterhouse LLP,  independent  accountants.  You
should read this  information  in  conjunction  with the  Portfolio's  financial
statements and  accompanying  notes,  which appear,  along with the audit report
from Price  Waterhouse  LLP, in the  Portfolio's  most recent  annual  report to
shareholders. The annual report is incorporated by reference in the Statement of
Additional  Information  and in this  prospectus,  and contains a more  complete
discussion of the Portfolio's  performance.  You may have the report sent to you
without  charge by writing to Vanguard or by calling  our  Investor  Information
Department.

   From time to time,  the  Vanguard  funds  advertise  yield  and total  return
figures. Yield is a historical measure of dividend income, and total return is a
measure of past dividend  income  (assuming  that it has been  reinvested)  plus
realized and unrealized capital appreciation  (depreciation).  Neither yield nor
total return should be used to predict the future performance.

<TABLE>
<CAPTION>


- ------------------------------------------------------------------------------------------------------------------------------------
                                                                             YEAR ENDED DECEMBER 31,
                                            ----------------------------------------------------------------------------------------
<S>                                         <C>      <C>      <C>     <C>       <C>      <C>      <C>       <C>     <C>      <C>
                                              1997     1996     1995    1994     1993      1992     1991     1990    1989     1988
- ------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF YEAR          $37.08   $37.01   $29.09   $30.65   $28.43   $28.20   $22.90    $26.15  $26.35   $22.77
                                            ----------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
   Net Investment Income                       .44      .65      .62      .34      .43      .68      .71      1.02     .87     1.02
   Net Realized and Unrealized
      Gain (Loss) on Investments              9.64     6.87     8.96    (1.53)    4.38     1.08     5.30     (3.19)   3.62     4.53
                                            ----------------------------------------------------------------------------------------
      TOTAL FROM INVESTMENT OPERATIONS       10.08     7.52     9.58    (1.19)    4.81     1.76     6.01     (2.17)   4.49     5.55
- ------------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
   Dividends from Net
      Investment Income                       (.43)    (.67)    (.61)    (.34)    (.43)    (.67)    (.71)    (1.08)   (.88)    (.97)
   Distributions from Realized
      Capital Gains                          (9.91)   (6.78)   (1.05)    (.03)   (2.16)    (.86)   --        --      (3.81)   (1.00)
                                            ----------------------------------------------------------------------------------------
      TOTAL DISTRIBUTIONS                   (10.34)   (7.45)   (1.66)    (.37)   (2.59)   (1.53)    (.71)    (1.08)  (4.69)   (1.97)
- ------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR                $36.82   $37.08   $37.01   $29.09   $30.65   $28.43   $28.20    $22.90  $26.15   $26.35
====================================================================================================================================
TOTAL RETURN                                 29.48%   21.30%   33.21%   -3.91%   17.24%    6.45%   26.57%    -8.33%  17.23%   24.64%
====================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Year (Millions)            $174     $158     $137     $113     $119      $68     $115      $100    $121     $115
Ratio of Total Expenses to
   Average Net Assets                         0.53%    0.49%    0.56%    0.73%    0.90%    0.65%    0.44%     0.52%   0.51%    0.58%
Ratio of Net Investment Income to
   Average Net Assets                         1.09%    1.68%    1.79%    1.14%    1.43%    2.33%    2.67%     4.18%   2.90%    3.86%
Portfolio Turnover Rate                        139%     114%      77%     151%     139%     209%      84%       81%     72%      90%
Average Commission Rate Paid                $.0480   $.0534      N/A      N/A      N/A      N/A      N/A       N/A     N/A       N/A
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                           PLAIN TALK ABOUT


              HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

          The  Portfolio  began  fiscal  1997 with a net  asset  value
          (price) of $37.08 per share.  During the year, the Portfolio
          earned $0.44 per share from investment  income (interest and
          dividends)  and $9.64 per share  from  investments  that had
          appreciated  in value or that  were sold for  higher  prices
          than the Portfolio  paid for them. In all,  $10.34 per share
          was returned to  shareholders  in the form of  distributions
          ($0.43 in dividends,  $9.91 in capital gains). This resulted
          in a  share  price  of  $36.82  at the  end of the  year,  a
          decrease of $0.26 per share (from $37.08 at the beginning of
          the year to $36.82 at the end of the  year).  Assuming  that
          the  shareholder  had  reinvested  the  distribution  in the
          purchase of more shares, total return from the Portfolio was
          29.48% for the year.

             As of December 31, 1997,  the  Portfolio had $174 million
          in net assets;  an expense  ratio of 0.53% ($5.30 per $1,000
          of net assets); and net investment income amounting to 1.09%
          of its average net assets.  It sold and replaced  securities
          valued at 139% of its total net assets.


                                   3

<PAGE>

A WORD ABOUT RISK

This  prospectus  describes  the risks you would face as an investor in the U.S.
Portfolio of Vanguard/Trustees' Equity Fund. It is important to keep in mind one
of the main axioms of investing: The higher the risk of losing money, the higher
the potential reward. The reverse,  also, is generally true: The lower the risk,
the lower the potential  reward.  However,  as you consider an investment in the
U.S.  Portfolio,  you should also take into account your personal  tolerance for
the daily fluctuations of the stock market.

   Look for this "warning flag" symbol [FLAG]  throughout the prospectus.  It is
used to mark  detailed  information  about  each  type of risk  that  you,  as a
shareholder of the Portfolio, would confront.

THE PORTFOLIO'S OBJECTIVES

Vanguard/Trustees' Equity Fund-U.S. Portfolio seeks to provide long-term capital
growth and a modest amount of income.  These objectives are  fundamental,  which
means that they cannot be changed unless a majority of  shareholders  vote to do
so.

   [FLAG] BECAUSE OF THE SEVERAL TYPES OF RISK DESCRIBED ON THE FOLLOWING PAGES,
          YOUR  INVESTMENT IN THE  PORTFOLIO,  AS WITH ANY  INVESTMENT IN COMMON
          STOCKS, COULD LOSE MONEY.

                           PLAIN TALK ABOUT

                     INVESTING FOR THE LONG TERM

          The  Portfolio  is  intended  to be a  long-term  investment
          vehicle  and is not  designed to provide  inves-tors  with a
          means of speculating on short-term fluctuations in the stock
          market.

WHO SHOULD INVEST

The Portfolio may be a suitable investment for you if:

   o  You wish to add a growth and income stock fund to your existing  holdings,
      which could  include  other  stock--as  well as bond,  money  market,  and
      tax-exempt--investments.

   o  You are seeking growth of capital over the long term--at least five years.

   o  You are looking for some dividend income.

   o  You characterize your investment temperament as "relatively aggressive."

   This  Portfolio is not an appropriate  investment if you are a  market-timer.
Investors  who  engage  in  excessive   in-and-out   trading  activity  generate
additional  costs  that are  borne by all of the  Portfolio's  shareholders.  To
minimize such costs, which reduce the ultimate returns achieved by you and other
shareholders, the Portfolio has adopted the following policies:

   o  The Portfolio reserves the right to reject any purchase request--including
      exchanges from other Vanguard  funds--that it regards as disruptive to the
      efficient management of the Portfolio. This could be because of the timing
      of the  investment  or because of a history  of  excessive  trading by the
      investor.

                                       4

<PAGE>

   o  There is a limit on the  number of times you can  exchange  into or out of
      the  Portfolio  (see  "Redeeming  Shares" in the  INVESTING  WITH VANGUARD
      section).

   o  The Portfolio reserves the right to stop offering shares at any time.

INVESTMENT STRATEGY

This  section  explains  how the  investment  adviser  pursues  the  Portfolio's
objectives of long-term  capital growth and some income.  It also explains three
important  risks--market  risk,  objective  risk,  and  manager  risk--faced  by
investors in the Portfolio.  Unlike the Portfolio's investment  objectives,  the
adviser's  investment  strategy  is not  fundamental  and can be  changed by the
Fund's Board of Trustees without shareholder  approval.  However,  before making
any important  change in its strategy,  the Portfolio will give  shareholders 30
days' notice, in writing.

                           PLAIN TALK ABOUT

                       COSTS AND MARKET-TIMING

          Some investors try to profit from "market-timing"--switching
          money into  investments when they expect prices to rise, and
          taking  money out when they  expect the  market to fall.  As
          money is  shifted  in and out, a fund  incurs  expenses  for
          buying and selling securities.  These costs are borne by all
          fund shareholders,  including long-term investors who do not
          generate the costs.  Therefore,  the  Portfolio  discourages
          short-term  trading by,  among other  things,  limiting  the
          number of exchanges it permits.

MARKET EXPOSURE

The Portfolio invests in common stocks of U.S. companies. Between 50% and 70% of
the  Portfolio's  assets  are  invested  in common  stocks  that  display  value
investment characteristics;  the remaining portion of the Portfolio's assets are
invested in growth-oriented common stocks.

   [FLAG] THE PORTFOLIO IS SUBJECT TO MARKET RISK, WHICH IS THE POSSIBILITY THAT
          STOCK PRICES OVERALL WILL DECLINE OVER SHORT OR EVEN EXTENDED PERIODS.
          STOCK  MARKETS  TEND TO MOVE IN CYCLES,  WITH  PERIODS OF RISING STOCK
          PRICES AND PERIODS OF FALLING STOCK PRICES.

   To illustrate the volatility of stock prices,  the following  table shows the
best,  worst,  and average total returns  (dividend income plus change in market
value)  for the U.S.  stock  market  over  various  periods as  measured  by the
Standard & Poor's 500 Composite  Stock Price Index,  a widely used  barometer of
stock market  activity.  Note that the returns shown do not include the costs of
buying  and  selling  stocks  or other  expenses  that a  real-world  investment
portfolio would incur.  Note,  also, how the gap between best and worst tends to
narrow over the long term.
<TABLE>
<CAPTION>


- --------------------------------------------------------------
                         U.S. STOCK MARKET RETURNS (1926-1997)
- --------------------------------------------------------------
<S>                       <C>      <C>      <C>       <C>
                          1 YEAR   5 YEARS  10 YEARS  20 YEARS
- --------------------------------------------------------------
Best                       53.9%    23.9%    20.1%     16.9%
Worst                     -43.3    -12.5     -0.9       3.1
Average                    13.0     10.5     10.9      10.9
- --------------------------------------------------------------
</TABLE>


   The table  covers all of the 1-,  5-,  10-,  and  20-year  periods  from 1926
through  1997.  For example,  while the average  return on stocks for all of the
5-year periods was 10.5%,  returns for these 5-year periods ranged from a -12.5%
average  (from 1928  through  1932),  to 23.9% (from 1950 through  1954).  These
average  returns  reflect past  performance  on common  stocks and should not be
regarded as an  indication  of future  returns from either the stock market as a
whole or the Portfolio in particular.

                           PLAIN TALK ABOUT

                           GROWTH FUNDS AND
                             VALUE FUNDS

          Growth investing and value investing are two styles employed
          by stock fund  managers.  Growth  funds  generally  focus on
          companies  that,  due to their  strong  earnings and revenue
          potential, offer above-average prospects for capital growth,
          with less emphasis on dividend income. Value funds generally
          emphasize  companies  that,  considering  their  assets  and
          earnings history,  are attractively  priced; these companies
          often pay regular  dividend income to  shareholders.  Growth
          and  value  stocks  have,  in  the  past,  produced  similar
          long-term  returns,  though  each  has had  periods  when it
          outperformed  the other. In general,  growth funds appeal to
          investors  who will  accept  more  volatility  in hopes of a
          greater  increase  in  share  price  or who  prefer a higher
          portion  of the  fund's  returns  to come as  capital  gains
          (which   may  be  taxed  at  lower   rates   than   dividend
          income).Value  funds,  by  contrast,   are  appropriate  for
          investors  who want some  dividend  income and the potential
          for  capital  gains  but are less  tolerant  of  share-price
          fluctuations.

                                       5

<PAGE>

   Finally, the U.S. Portfolio invests in large-, mid-, and small-capitalization
stocks. Mid- and small-cap stocks have historically been more volatile than--and
at times have performed quite  differently  from--the  large-cap stocks found in
the S&P 500 Index. For this reason and because the U.S.  Portfolio does not hold
the  same  securities  held in the S&P  Index or any  other  market  index,  the
performance  of the  Portfolio  will not  mirror the  returns of any  particular
index.

   [FLAG] THE PORTFOLIO IS SUBJECT TO OBJECTIVE  RISK,  WHICH IS THE POSSIBILITY
          THAT  RETURNS FROM EITHER  VALUE OR GROWTH  STOCKS WILL TRAIL  RETURNS
          FROM THE OVERALL  STOCK  MARKET.  AS GROUPS,  VALUE  STOCKS AND GROWTH
          STOCKS  TEND TO GO THROUGH  CYCLES OF  RELATIVE  UNDERPERFORMANCE  AND
          OUTPERFORMANCE  IN  COMPARISON  TO  COMMON  STOCKS IN  GENERAL.  THESE
          PERIODS HAVE, IN THE PAST, LASTED FOR AS LONG AS SEVERAL YEARS.

                           PLAIN TALK ABOUT

               LARGE-CAP, MID-CAP, AND SMALL-CAP STOCKS

          Stocks of publicly traded  companies--and  mutual funds that
          hold  these  stocks--can  be  classified  by the  companies'
          market   value,   or   capitalization.    Vanguard   defines
          large-capitalization,  or large-cap,  funds as those holding
          stocks  of  companies  with  a  median  total  market  value
          exceeding  $7.5  billion.   Mid-cap  funds  hold  stocks  of
          companies  with a median market value between $1 billion and
          $7.5 billion.  Small-cap funds hold stocks of companies with
          a median market value of less than $1 billion.

SECURITY SELECTION

Geewax, Terker & Company ("Geewax,  Terker"),  adviser to the Portfolio,  uses a
multistep process in evaluating and picking stocks for the Portfolio.

   In screening  stocks for the value portion of the Portfolio,  Geewax,  Terker
examines a company's financial statements; measures the market's response to the
company's  recent  earnings  announcements;  and  reviews  analyst  data to find
problems that may not be detected from the company's financial reports.

   To be considered for the U.S.  Portfolio's growth portion, a company must, in
Geewax,  Terker's opinion,  be financially sound and have the ability to finance
future growth;  be considered a "growth stock" by the general  market;  and have
earnings that are growing at a higher-than-expected rate.


   All value and growth stocks owned by the Portfolio  must pass this  screening
process.  The top ten holdings (which amounted to 21.8% of the Portfolio's total
net assets) as of December 31, 1997, follow.

         1. Intel Corp.
         2. General Electric Co.
         3. Merck & Co., Inc.
         4. Procter & Gamble Co.
         5. Wal-Mart Stores, Inc.
         6. Bristol-Myers Squibb Co.
         7. Standard & Poor's Depositary Receipts
         8. Morgan Stanley, Dean Witter, Discover and Co.
         9. Cisco Systems, Inc.
        10. Exxon Corp.


                           PLAIN TALK ABOUT

                      PORTFOLIO DIVERSIFICATION

          In  general,  the more  diversified  a fund's  portfolio  of
          stocks,  the  less  likely  that  a  specific  stock's  poor
          performance  will hurt the  fund.  One  measure  of a fund's
          level of  diversification  is the  percentage  of total  net
          assets represented by its ten largest holdings.  The average
          U.S. equity mutual fund has about 25% of its assets invested
          in its ten  largest  holdings,  while some  less-diversified
          mutual  funds have 40% or more of their  assets  invested in
          the stocks of just ten companies.

                                       6

<PAGE>

   Keep in mind that,  because the makeup of the Portfolio  changes daily,  this
listing is only a "snapshot" at one point in time.

   The Portfolio is run by Geewax,  Terker  according to traditional  methods of
active  investment  management,  which  means  securities  are  bought  and sold
according to Geewax,  Terker's  judgments  about  companies and their  financial
prospects, and about the stock market and the economy in general.

   [FLAG] THE  PORTFOLIO IS SUBJECT TO MANAGER  RISK,  WHICH IS THE  POSSIBILITY
          THAT GEEWAX, TERKER MAY DO A POOR JOB OF SELECTING STOCKS.

PORTFOLIO TURNOVER


Although the Portfolio  generally  seeks to invest for the long term, it retains
the right to sell  securities  regardless  of how long they have been held.  The
Portfolio's  average  turnover rate for the past ten years has been  high--about
116%--and has exceeded 100% in four of the past five years.  (A turnover rate of
100% would occur,  for example,  if the Portfolio  sold and replaced  securities
valued at 100% of its total net assets within a one-year period.)


                           PLAIN TALK ABOUT

                          PORTFOLIO TURNOVER


          Before  investing  in a mutual fund,  you should  review its
          portfolio  turnover  rate for an indication of the potential
          effect of transaction costs on the fund's future returns. In
          general, the greater the volume of buying and selling by the
          fund, the greater the impact that brokerage  commissions and
          other transaction costs will have on its return. Also, funds
          with high  portfolio  turnover rates may be more likely than
          low-turnover  funds to generate  capital  gains that must be
          distributed to shareholders  as taxable income.  The average
          turnover rate for all domestic stock funds is  approximately
          80%.


INVESTMENT POLICIES

Besides investing in common stocks of growth companies, the Portfolio may follow
a number of other investment policies to achieve its objectives.


   The  Portfolio  may invest up to 20% of its assets in securities of companies
based outside the United States.  These  securities may be traded in either U.S.
or foreign markets.

   Because of its investments in foreign securities, the Portfolio is subject to
foreign market risk. Investments in foreign stock markets can be as volatile, if
not more volatile,  than investments in U.S. stock markets.  Over the years, the
prices of  foreign  stocks  and the prices of U.S.  stocks  have often  moved in
opposite directions.  However, a portfolio that invests in both U.S. and foreign
stocks  may  benefit  from  diversification  and  have  less  volatility  than a
portfolio made up strictly of foreign stocks.

   In addition,  the Portfolio is subject to country and currency risk.  Country
risk is the  possibility  that  political  events  (such  as a  war),  financial
problems  (such  as  government  default),  or  natural  disasters  (such  as an
earthquake)  will  weaken a  country's  economy  and cause  investments  in that
country to lose money.  Currency risk is the possibility  that a "stronger" U.S.
dollar will reduce returns for Americans investing overseas. Generally, when the
dollar  rises in value  against  a foreign  currency,  your  investment  in that
country  loses value  because its currency is worth fewer U.S.  dollars.  On the
other  hand,  a "weaker"  U.S.  dollar  generally  leads to higher  returns  for
Americans holding foreign investments.


   The Portfolio may also invest in derivatives.

                           PLAIN TALK ABOUT


                             THE RISKS OF
                       INTERNATIONAL INVESTING

          Because foreign stock markets operate  differently  from the
          U.S. market, Americans investing abroad will encounter risks
          not typically associated with U.S. companies.  For instance,
          foreign  companies  are not subject to the same  accounting,
          auditing, and financial reporting standards and practices as
          U.S. companies;  and their stock may not be as liquid as the
          stock of similar U.S. companies. In addition,  foreign stock
          exchanges,   brokers,  and  companies  generally  have  less
          government    supervision    and   regulation   than   their
          counterparts  in the United  States.  These  factors,  among
          others,   could  negatively  impact  the  returns  Americans
          receive from a foreign investment. For more information, see
          the Portfolio's Statement of Additional Information.


                                  7

<PAGE>

   [FLAG] ALTHOUGH IT HAS NOT DONE SO IN THE PAST,  THE  PORTFOLIO  RESERVES THE
          RIGHT TO INVEST,  TO A LIMITED  EXTENT,  IN STOCK  FUTURES AND OPTIONS
          CONTRACTS, WHICH ARE TRADITIONAL TYPES OF DERIVATIVES.


   Losses (or gains)  involving  futures can sometimes be  substantial--in  part
because a relatively small price movement in a futures contract may result in an
immediate and  substantial  loss (or gain) for a portfolio.  This Portfolio will
not use futures and options for speculative purposes or as leveraged investments
that magnify the gains or losses of an  investment.  Rather,  the Portfolio will
keep separate cash reserves or other liquid  portfolio  securities in the amount
of the  obligation  underlying the futures or options  contract.  Only a limited
percentage of the  Portfolio's  assets--5%--may  be applied  toward the deposits
required on futures  contracts,  and the value of all futures contracts in which
the Portfolio  acquires an interest cannot exceed 20% of the  Portfolio's  total
assets.The  reasons for which the  Portfolio  will invest in futures and options
are:

   o  To keep cash on hand to meet shareholder  redemptions or other needs while
      simulating full investment in stocks.

   o  To  reduce  the  Portfolio's  transaction  costs or add value  when  these
      instruments are favorably priced.


   The Portfolio will usually hold only a small percentage of its assets in cash
reserves,  although if the investment  adviser  believes that market  conditions
warrant a temporary  defensive  measure,  the  Portfolio  may hold cash reserves
without limit.

                           PLAIN TALK ABOUT

                             DERIVATIVES

          A derivative is a financial contract whose value is based on
          (or "derived" from) a traditional  security (such as a stock
          or a bond),  an asset (such as a commodity like gold),  or a
          market  index  (such  as the S&P  500  Index).  Futures  and
          options are derivatives  that have been trading on regulated
          exchanges  for more than two  decades.  These  "traditional"
          derivatives  are  standardized  contracts that can easily be
          bought and sold,  and whose market values are determined and
          published   daily.   It  is   these   characteristics   that
          differentiate  futures and options from the  relatively  new
          types  of  derivatives.   If  used  for  speculation  or  as
          leveraged  investments,  derivatives can carry  considerable
          risks.

Investment Limitations


The Portfolio has adopted limitations on some of its investment  policies.  Some
of these limitations are that the Portfolio will not:

   o  Invest more than 25% of its assets in any one industry.

   o  Borrow money,  except for temporary or emergency purposes in an amount not
      exceeding  10% of its net assets.  Whenever  the  Portfolio's  outstanding
      borrowing is more than 5% of its assets, it will stop making investments.

   With respect to 75% of its assets, this Portfolio will not:

   o  Invest more than 5% of its assets in the securities of any one company.

   o  Buy more than 10% of the outstanding voting securities of any company.

   A complete list of the Portfolio's investment limitations can be found in the
Statement of Additional  Information.  These limitations are fundamental and may
be changed only by approval of a majority of the Portfolio's shareholders.


                                       8

<PAGE>

INVESTMENT PERFORMANCE

Vanguard/Trustees'  Equity  Fund-U.S.  Portfolio  invests  primarily  in  common
stocks,  so its  performance  is closely  correlated to the  performance  of the
overall  stock  market.   Historically,   stock  market   performance  has  been
characterized by sharp  up-and-down  swings in the short term and by more stable
growth over the long term.


<TABLE>
<CAPTION>

                          AVERAGE ANNUAL TOTAL RETURNS
                       FOR YEARS ENDED DECEMBER 31, 1997
<S>                          <C>       <C>       <C>   

                             1 YEAR    5 YEARS   10 YEARS
U.S. Portfolio                29.5%     18.7%      15.6%
S&P 500 Index                 33.4%     20.3%      18.1%

</TABLE>


   The results  shown above  represent  the  Portfolio's  "average  annual total
return"  performance,  which assumes that any distributions of capital gains and
dividends  were  reinvested  for  the  indicated   periods.   Also  included  is
comparative  information on the unmanaged S&P 500 Index. The chart does not make
any allowance for federal,  state, or local income taxes that  shareholders must
pay on a current basis.

   In weighing these performance figures,  note that the U.S. Portfolio has been
in operation  since January 31, 1980, and managed by Geewax,  Terker since April
1, 1992.

                           PLAIN TALK ABOUT

                           PAST PERFORMANCE

          Whenever you see information on a fund's performance, do not
          consider the figures to be an indication of the  performance
          you could expect by making an  investment in the fund today.
          The past is an imperfect  guide to the future;  history does
          not repeat itself in neat, predictable patterns.

SHARE PRICE

The Portfolio's  share price,  called its net asset value, or NAV, is calculated
each  business  day after the close of trading  on the New York Stock  Exchange,
generally 4 p.m. Eastern time. Net asset value per share is calculated by adding
up the total assets of the Portfolio,  subtracting  all of its  liabilities,  or
debts,   and  then   dividing   by  the  total   number  of   Portfolio   shares
outstanding:

                               TOTAL ASSETS   -   LIABILITIES
         NET ASSET VALUE =    --------------------------------
                                NUMBER OF SHARES OUTSTANDING

The daily net asset  value is useful to you as a  shareholder  because  the NAV,
multiplied  by the  number of  Portfolio  shares  you own,  gives you the dollar
amount  you would  have  received  had you sold all of your  shares  back to the
Portfolio that day.


   The Portfolio's share price can be found daily in the mutual fund listings of
most major newspapers under the heading "Vanguard  Funds." Different  newspapers
use different  abbreviations  of the  Portfolio's  name,  but the most common is
TRUS.


                           PLAIN TALK ABOUT

                            DISTRIBUTIONS

          As a  shareholder,  you are  entitled  to your  share of the
          fund's  income from interest and  dividends,  and gains from
          the sale of investments. You receive such earnings as either
          income  dividends  or capital  gains  distributions.  Income
          dividends  come from the dividends  that the fund earns from
          its holdings as well as interest it receives  from its money
          market  and bond  investments.  Capital  gains are  realized
          whenever the fund sells securities for higher prices than it
          paid for them. These capital gains are either  short-term or
          long-term  depending on whether the fund held the securities
          for less than or more than one year.

                                       9

<PAGE>

DIVIDENDS, CAPITAL GAINS, AND TAXES

Each June and December,  the Portfolio distributes to shareholders virtually all
of its income from interest and  dividends.  Any capital gains realized from the
sale of securities are distributed in December.  In addition,  the Portfolio may
occasionally  be  required  to  make  supplemental  dividend  or  capital  gains
distributions  at other times  during the year.  You can choose to receive  your
distributions  of  income  and/or  capital  gains in cash,  or you can have them
automatically  invested in more shares of the Portfolio.  In either case,  these
distributions are taxable to you. It is important to note that  distributions of
dividends and capital gains that are declared in December--if paid to you by the
end of January--are taxed as if they had been paid to you in December. Each year
Vanguard  will  send  you a  statement  showing  the  tax  status  of  all  your
distributions.


   o  The dividends and short-term capital gains that you receive are taxable to
      you as  ordinary  dividend  income.  Any  distributions  of net  long-term
      capital  gains by the  Portfolio  are taxable to you as long-term  capital
      gains, no matter how long you've owned shares in the Portfolio.  Long-term
      capital  gains may be taxed at different  rates  depending on how long the
      Portfolio  held the  securities.  Although the Portfolio  does not seek to
      realize any particular  amount of capital gains during a year,  such gains
      are realized from time to time as by-products  of the ordinary  investment
      activities  of  the  Portfolio.   Consequently,   distributions  may  vary
      considerably from year to year.


   o  If you sell or  exchange  shares,  any gain or loss you have is a  taxable
      event,  which means that you may have a capital  gain to report as income,
      or a capital loss to report as a deduction, when you complete your federal
      income tax return.

   o  Distributions  of dividends or capital gains,  and capital gains or losses
      from your sale or exchange of  Portfolio  shares,  may be subject to state
      and local income taxes as well.

   The tax information in this prospectus is provided as general information and
will not apply to you if you are investing in a tax-deferred  account such as an
IRA.  You should  consult  your tax  adviser  about the tax  consequences  of an
investment in the Portfolio.

                           PLAIN TALK ABOUT

                         "BUYING A DIVIDEND"

          Unless  you  are  investing  in  a  tax-deferred  retirement
          account (such as an IRA), it is not to your advantage to buy
          shares of a fund  shortly  before  it makes a  distribution,
          because part of your  investment  will come back to you as a
          taxable distribution.  This is known as "buying a dividend."
          For example:  on December 15, you invest $5,000,  buying 250
          shares for $20 each. If the fund pays a  distribution  of $1
          per share on December  16, its share price would drop to $19
          (not  counting  market  change).  You would  still have only
          $5,000 (250 shares x $19 = $4,750 in share  value,  plus 250
          shares x $1 = $250 in distributions),  but you would owe tax
          on the  $250  distribution  you  received,  even  if you had
          reinvested the dividends in more shares.  To avoid "buying a
          dividend," check a fund's  distribution  schedule before you
          invest.

THE PORTFOLIO AND VANGUARD


The U.S. Portfolio of Vanguard/Trustees' Equity Fund is a member of The Vanguard
Group, a family of more than 30 investment  companies with more than 95 distinct
investment portfolios and total net assets of more than $360 billion. All of the
Vanguard funds share in the expenses associated with business  operations,  such
as personnel, office space, equipment, and advertising.


   Vanguard also provides marketing services to the funds. Although shareholders
do not pay  sales  commissions  or 12b-1  marketing  fees,  each  fund  pays its
allocated share of The Vanguard Group's costs.

                           PLAIN TALK ABOUT

                VANGUARD'S UNIQUE CORPORATE STRUCTURE

          The Vanguard  Group,  Inc.,  is the only MUTUAL  mutual fund
          company. It is owned jointly by the funds it oversees and by
          the  shareholders  in those  funds.  Other  mutual funds are
          operated  by  for-profit  management  companies  that may be
          owned  by one  person,  by a  group  of  individuals,  or by
          investors  who  bought  the  management  company's  publicly
          traded stock.  Because of its structure,  Vanguard  operates
          its funds at cost.  Instead  of  distributing  profits  from
          operations  to  a  separate  management  company,   Vanguard
          returns  profits to fund  shareholders  in the form of lower
          operating expenses.

                                       10

<PAGE>

   A list of the Fund's Trustees and Officers,  and their present  positions and
principal  occupations during the past five years, can be found in the Statement
of Additional Information.

INVESTMENT ADVISER

The Portfolio  employs Geewax,  Terker & Company  ("Geewax,  Terker"),  99 Starr
Street,  Phoenixville,  PA 19460,  as its  investment  adviser.  Geewax,  Terker
manages the Portfolio subject to the control of the Trustees and officers of the
Fund.

   Geewax, Terker is paid an advisory fee at the end of each fiscal quarter. The
fee is based on the Portfolio's average month-end net assets during the quarter,
multiplied by an annual percentage rate of 0.40%.

   The advisory fee may be  increased or decreased by an  incentive/penalty  fee
based on the difference between the Portfolio's cumulative 36-month total return
performance and that of the S&P 500 Index.


   For the year ended  December  31,  1997,  the  advisory  fee  represented  an
effective  annual  basic  rate of 0.40% of the  Portfolio's  average  net assets
before a decrease of 0.18% based on performance.


   The  agreement  authorizes  Geewax,  Terker to choose  brokers  or dealers to
handle the purchase and sale of the Portfolio's securities,  and directs Geewax,
Terker to get the best available  price and most favorable  execution from these
brokers with respect to all transactions.  At times,  Geewax,  Terker may choose
brokers  who charge  higher  commissions  in the  interest of  obtaining  better
execution  of a  transaction.  If more  than  one  broker  can  obtain  the best
available price and favorable execution of a transaction, then Geewax, Terker is
authorized  to choose a broker who, in addition to  executing  the  transaction,
will provide  research  services to Geewax,  Terker or the  Portfolio.  However,
Geewax,  Terker will not pay higher commissions  specifically for the purpose of
obtaining  research services.  The Portfolio may direct Geewax,  Terker to use a
particular broker for certain transactions in exchange for commission rebates or
research services provided to the Portfolio.

   The Fund's Board of Trustees may,  without prior approval from  shareholders,
change the terms of the  advisory  agreement or hire a new  investment  adviser,
either as a replacement for Geewax, Terker or as an additional adviser. However,
no such change would be made before  giving  shareholders  30 days'  notice,  in
writing.

                           PLAIN TALK ABOUT


                       THE PORTFOLIO'S ADVISER

          Geewax,  Terker  &  Company,  an  investment  advisory  firm
          founded  in 1982,  currently  manages  about $3  billion  in
          assets for  institutional  endowment and pension funds.  The
          manager  responsible  for overseeing the  implementation  of
          Geewax,  Terker's  strategy  for  Vanguard/Trustees'  Equity
          Fund-U.S. Portfolio is:

             JOHN J.  GEEWAX,  Partner and Founder,  Geewax,  Terker &
          Company;  has worked in  investment  management  since 1980;
          B.S., M.B.A., and J.D., University of Pennsylvania.

             Mr.  Geewax has  served in this  capacity  since  Geewax,
          Terker became the Portfolio's adviser in April 1992.


                                  11

<PAGE>

GENERAL INFORMATION

The U.S. Portfolio is one of two Portfolios of Vanguard/Trustees' Equity Fund, a
Pennsylvania business trust. The other Portfolio is Vanguard International Value
Portfolio.   The   Portfolios   are  combined   under  one  business  trust  for
administrative  purposes,  but in virtually  all respects  operate like separate
business trusts.

   Shareholders  of the U.S.  Portfolio  have rights and  privileges  similar to
those enjoyed by corporate  and trust  shareholders.  For example,  shareholders
will not be responsible for any liabilities of the Portfolio. If any matters are
to be voted on by  shareholders  (such as a change in a  fundamental  investment
objective or the election of  Trustees),  each share  outstanding  at that point
would be entitled to one vote. Annual meetings will not be held by the Portfolio
except as required by the  Investment  Company  Act of 1940.  A meeting  will be
scheduled  to vote on the removal of a Trustee if the holders of at least 10% of
the Fund's shares request a meeting in writing.

"Standard & Poor's 500," "S&P  500(R),"  "Standard &  Poor's(R),"  "S&P(R)," and
"500" are trademarks of The McGraw-Hill Companies, Inc.

                                       12

<PAGE>

INVESTING WITH VANGUARD

Are you looking for the most  convenient  way to open or add money to a Vanguard
account?  Obtain instant access to fund information?  Establish an account for a
minor child or for your retirement savings?

   Vanguard  can help.  Our goal is to make it easy and  pleasant  for you to do
business with us.

   The following sections of the prospectus briefly explain the many services we
offer  you  as a  Vanguard/Trustees'  Equity  Fund-U.S.  Portfolio  shareholder.
Booklets  providing  detailed  information  are available on the services marked
with a [BOOK]. Please call us to request copies.

SERVICES AND ACCOUNT FEATURES

Vanguard  offers many services that make it convenient to buy, sell, or exchange
shares.

TELEPHONE REDEMPTIONS              Automatically set up for this Portfolio
(SALES AND EXCHANGES)              unless you notify us otherwise.

VANGUARD DIRECT DEPOSIT            Automatic method for depositing your paycheck
SERVICE(TM)                        or U.S. government payment (including Social
[BOOK]                             Security and government pension checks) into
                                   your account.

VANGUARD AUTOMATIC EXCHANGE        Automatic method for moving a fixed amount of
SERVICE(SM)                        money from one Vanguard fund account to
[BOOK]                             to another.*


VANGUARD FUND EXPRESS(R)           Electronic method for buying or selling
[BOOK]                             shares. You can transfer money between your
                                   Vanguard fund account and an account at your
                                   bank, savings and loan, or credit union on a
                                   systematic schedule or whenever you wish.*


VANGUARD DIVIDEND EXPRESS(SM)      Electronic method for transferring dividend
[BOOK]                             dividend and/or capital gains distributions
                                   directly from your Vanguard fund account to
                                   your bank, savings and loan, or credit union
                                   account.

VANGUARD BROKERAGE SERVICES        A cost-effective way to trade stocks, bonds,
(VBS)                              and options on major exchanges, Nasdaq, and
[BOOK]                             other domestic over-the-counter markets at
                                   reduced rates, and to buy and sell shares of
                                   non-Vanguard mutual funds. Call VBS
                                   (1-800-992-8327) for additional information
                                   and the appropriate forms.

*Can be used to "dollar-cost average" [BOOK] or to contribute to an IRA or other
retirement plan.

                                       13

<PAGE>

TYPES OF ACCOUNTS

INDIVIDUAL OR OTHER ENTITY Vanguard's  account  registration form can be used to
establish a variety of nonretirement accounts.

FOR ONE OR MORE PEOPLE             To open an account in the name of one
                                   (individual) or more (joint tenants) people.
                                   $3,000 minimum initial investment.


FOR A MINOR CHILD                  To open an account as an UGMA/UTMA
[BOOK]                             (Uniform Gifts/Transfers to Minors Act). Age
                                   of majority and other requirements are set by
                                   state law. $1,000 minimum initial investment.

FOR A MINOR CHILD                  To open an account as an Education IRA.
(Vanguard Fiduciary Trust          Eligibility and other requirements are
Company is the custodian.)         established by federal tax law and the
[BOOK]                             law and the Vanguard Education IRA. (Note:
                                   You should establish this type of account
                                   with a Vanguard adoption agreement--not an
                                   account registration form.) Please call
                                   Investor Information to request the
                                   appropriate brochure and forms. $500 minimum
                                   initial investment.


FOR HOLDING TRUST ASSETS           To invest assets held in an existing trust.
[BOOK]                             $3,000 minimum initial investment.


FOR THIRD-PARTY TRUSTEE            To open an account as a retirement trust or
RETIREMENT INVESTMENTS             plan based on an existing corporate or
(Vanguard is not the custodian     institutional plan. These accounts are
or trustee.)                       established by the custodian or trustee of
1-800-662-2003                     the existing plan. $1,000 minimum initial
Individual Retirement Plans        investment.


FOR AN ORGANIZATION                To open an account as a corporation,
                                   partnership, or other entity. These accounts
                                   may require a corporate resolution or other
                                   documents to name the individuals authorized
                                   to act. $3,000 minimum initial investment.

RETIREMENT

You establish these accounts with a Vanguard adoption  agreement--not a Vanguard
account  registration  form. To request the appropriate  adoption  agreement and
forms,  or to ask  questions  about  investing  for  retirement,  call  Investor
Information.


FOR A TRADITIONAL INDIVIDUAL       To open a retirement account in the name of
RETIREMENT ACCOUNT                 an individual. Traditional IRAs can be
(TRADITIONAL IRA)                  established with a contribution, a direct
(Vanguard Fiduciary Trust          rollover from an employer's plan such as a
Company is the custodian.)         401(k), or an asset transfer or rollover from
                                   another financial institution, such as a bank
                                   or mutual fund company. $1,000 minimum
                                   initial investment.

FOR A ROTH INDIVIDUAL              To open an after-tax retirement savings
RETIREMENT ACCOUNT                 account in the name of an individual. Roth
(ROTH IRA)                         IRAs can be established with an after-tax
(Vanguard Fiduciary Trust          contribution, an asset transfer or rollover
Company is the custodian.)         from another financial institution such as a
                                   bank or mutual fund company, or a conversion
                                   of an existing IRA. Eligibility and other
                                   requirements are established by federal tax
                                   law. $1,000 minimum initial investment.


                                       14

<PAGE>

TYPES OF ACCOUNTS (continued)


FOR A SIMPLIFIED EMPLOYEE          To open a retirement account in the name of
PENSION PLAN ACCOUNT (SEP-IRA)     an employee. SEPs allow employers to make
(Vanguard Fiduciary Trust          deductible contributions directly to IRAs
Company is the custodian.)         established by their employees. SEPs can be
1-800-662-2003                     established by people who are self-employed,
Individual Retirement Plans        small-business owners, partnerships, or
                                   corporations.

FOR A SAVINGS INCENTIVE MATCH      To open a retirement account in the name of
PLAN FOR EMPLOYEES ACCOUNT         an employee. Created as part of the Small
(SIMPLE IRA)                       Business Job Protection Act of 1996, SIMPLEs
(Vanguard Fiduciary Trust          replace SAR-SEPs. SIMPLEs are exclusively for
Company is the custodian.)         employers that had 100 or fewer employees in
1-800-662-2003                     the most recent calendar year and that do not
Individual Retirement Plans        maintain another employer-sponsored
                                   retirement plan. SIMPLEs can be established
                                   by people who are self-employed, small-
                                   business owners, partnerships, or
                                   corporations. Salary reduction contributions
                                   may be made by the employee, with matching or
                                   nonmatching contributions from the employer.

FOR A QUALIFIED RETIREMENT         To open a retirement account that allows
PROGRAM ACCOUNT                    small-business owners or people who are self-
(Vanguard Fiduciary Trust          employed to make tax-deductible retirement
Company can be the trustee.)       contributions for themselves and their
1-800-662-2003                     employees into Profit-Sharing and Money
Individual Retirement Plans        Purchase Pension (Keogh) plans.

FOR A 403(B)(7) CUSTODIAL ACCOUNT  To open a retirement account that allows
(Vanguard Fiduciary Trust          employees of tax-exempt institutions (for
Company is the custodian.)         example, schools or hospitals) to make pretax
1-800-662-2003                     pretax retirement contributions.
Individual Retirement Plans


DISTRIBUTION  OPTIONS

You can receive  distributions  of dividends and/or capital gains in a number of
ways:

REINVESTMENT                       Dividends and capital gains are automatically
                                   reinvested in additional shares of the
                                   Portfolio unless you request a different
                                   distribution method.

DIVIDENDS IN CASH                  Dividends are paid by check and mailed to
                                   your account's address of record, and capital
                                   gains are reinvested in additional shares of
                                   the Portfolio.


CAPITAL GAINS IN CASH              Capital gains distributions are paid by check
                                   and mailed to your account's address of
                                   record, and dividends are reinvested in
                                   additional shares of the Portfolio.

DIVIDENDS AND CAPITAL GAINS        Both dividends and capital gains
IN CASH                            distributions are paid by check and mailed to
                                   your account's address of record.

To  electronically  transfer cash  dividends  and/or capital gains to your bank,
savings and loan, or credit union account,  see Vanguard  Dividend Express under
"Services and Account Features." To transfer cash dividends and/or capital gains
to another Vanguard fund, call Client Services.


                                       15

<PAGE>

DISTRIBUTION OPTIONS (continued)


If you have elected to receive  dividend and/or capital gains  distributions  in
cash,  but the Postal  Service  is unable to make  delivery  to your  address of
record,  your distribution  option will be changed to reinvestment.  No interest
will accrue on amounts represented by uncashed distribution checks.


BUYING SHARES


You buy your  shares at the  Portfolio's  next-determined  net asset value after
Vanguard  receives  your  request,  provided we receive your request  before the
close of trading on the New York Stock  Exchange (the  "Exchange"),  generally 4
p.m. Eastern time. The Portfolio is offered on a no-load basis, meaning that you
do not pay sales commissions or 12b-1 marketing fees.


                          OPEN A NEW ACCOUNT          ADD TO AN EXISTING ACCOUNT


MINIMUM INVESTMENT        $3,000 (regular account);   $100 by mail or exchange;
                          $1,000 (Traditional IRAs,   $1,000 by wire.
                          Roth IRAs, and custodial
                          accounts for minors);
                          $500 (Education IRAs).


BY MAIL                   Complete and sign the       Mail your check with an
[ENVELOPE]                application form.           Invest-By-Mail form
FIRST-CLASS mail to:                                  detached from your
The Vanguard Group                                    confirmation statement to
P.O. Box 2600                                         the address listed on the
Valley Forge,                                         form.
PA 19482-2600
                          Make your check payable to: Make your check payable
EXPRESS or REGISTERED     The Vanguard Group-25       to: The Vanguard Group-25
mail to:
The Vanguard Group        All purchases must be made  All purchases must be made
455 Devon Park Drive      in U.S. dollars, and        in U.S. dollars, and
Wayne, PA 19087-1815      checks must be drawn on     checks must be drawn on
                          U.S. banks.                 U.S. banks.

IMPORTANT  NOTE:  To prevent  check fraud,  Vanguard will not accept checks made
payable to third parties.

BY TELEPHONE              Call Vanguard Tele-Account* Call Vanguard Tele-
[TELEPHONE]               24 hours a day--or Client   Account* 24 hours a day--
1-800-662-6273            Services during business    or Client Services during
Vanguard Tele-Account(R)  hours--to exchange from     business hours--to
1-800-662-2739            another Vanguard fund       exchange from another
Client Services           account with the same       Vanguard fund account with
                          registration (name,         the same registration
                          address, taxpayer I.D.,     (name, address, taxpayer
                          and account type).          I.D., and account type).

                                                      Use Vanguard Fund Express
                                                      (see "Services and Account
                                                      Features") to transfer
                                                      assets from your bank
                                                      account. Call Client
                                                      Services before your first
                                                      use to verify that this
                                                      option is in place.

                          *You must obtain a Personal Identification Number
                          through Tele-Account at least seven days before you
                          request your first exchange.

IMPORTANT  NOTE:  Once a telephone  transaction  has been  approved by you and a
confirmation  number  assigned,  it cannot be  revoked.  We reserve the right to
refuse any purchase.

                                       16

<PAGE>

BUYING SHARES (continued)


                          OPEN A NEW ACCOUNT          ADD TO AN EXISTING ACCOUNT

BY WIRE                   Call Client Services to     Call Client Services to
[WIRE]                    arrange your wire           arrange your wire
Wire to:                  transaction.                transaction.
CoreStates Bank, N.A.
ABA 031000011             Wire transactions are not   Wire transactions are not
CoreStates No. 0101 9897  available for retirement    available for retirement
[Temporary Account        accounts, except for asset  accounts, except for asset
Number] Vanguard/         transfers and direct        transfers and direct
Trustees' Equity          rollovers.                  rollovers.
Fund- U.S. Portfolio
[Account Registration]
Attention: Vanguard

AUTOMATICALLY                         --              Vanguard offers a variety
[CIRCLE OF ARROWS]                                    of ways that you can add
                                                      to your account
                                                      automatically. See
                                                      "Services and Account
                                                      Features."


You can redeem (that is, sell or exchange) shares purchased by check or Vanguard
Fund  Express  at any time.  However,  while  your  redemption  request  will be
processed  at the  next-determined  net asset value after it is  received,  your
redemption  proceeds  will not be available  until  payment for your purchase is
collected, which may take up to ten calendar days.

IMPORTANT NOTE: If you buy Portfolio  shares through a registered  broker/dealer
or investment  adviser,  the  broker/dealer  or adviser may charge you a service
fee.

   It is  important  that you call  Vanguard  before you  invest a large  dollar
amount  by wire or  check.  We must  consider  the  interests  of all  Portfolio
shareholders  and so reserve the right to delay or refuse any purchase that will
disrupt the Portfolio's operation or performance.

REDEEMING SHARES

IMPORTANT TAX NOTE:  Any sale or exchange of shares in a  nonretirement  account
could result in a taxable gain or a loss.

The ability to redeem (that is, sell or exchange)  Portfolio shares by telephone
is automatically  established for your nonretirement  account unless you tell us
in writing that you do not want this option.

   To  protect  your  account  from   unauthorized   or   fraudulent   telephone
instructions,  Vanguard follows specific security procedures.  When we receive a
call requesting an account transaction, we require the caller to provide:

   [CHECK] Portfolio name.

   [CHECK] 10-digit account number.

   [CHECK] Name and address exactly as registered on that account.

   [CHECK] Social  Security or employer  identification  number as registered on
that account.

   If you call to sell shares, the sale proceeds will be made payable to you, as
the registered shareholder, and mailed to your account's address of record.

   If we follow  reasonable  security  procedures,  neither  the  Portfolio  nor
Vanguard will be responsible for the  authenticity  of transaction  instructions
received by telephone. We believe that these procedures are reasonable and that,
if we follow them, you bear the risk of any losses  resulting from  unauthorized
or fraudulent telephone transactions on your account.

                                       17

<PAGE>

REDEEMING SHARES (continued)

HOW TO SELL SHARES

You may withdraw any part of your account,  at any time, by selling shares. Sale
proceeds are normally  mailed within two business days after  Vanguard  receives
your  request.   The  sale  price  of  your  shares  will  be  the   Portfolio's
next-determined  net asset value after Vanguard receives all required  documents
in good order.

   Good order means that the request includes:

   [CHECK] Portfolio name and account number.

   [CHECK] Amount of the transaction (in dollars or shares).

   [CHECK] Signatures of all owners exactly as registered on the account.

   [CHECK] Signature guarantees (if required).

   [CHECK] Any supporting legal documentation that may be required.

   [CHECK] Any certificates you are holding for the account.



   Sales or  exchange  requests  received  after  the  close of  trading  on the
Exchange are processed at the next business  day's net asset value.  No interest
will accrue on amounts  represented by uncashed redemption checks. The Portfolio
will not cancel any trade (e.g., purchase,  redemption, or exchange) believed to
be  authentic  once  the  trade  request  has been  received  in  writing  or by
telephone.

   The  Portfolio  reserves  the right to close any  nonretirement  or UGMA/UTMA
account in which the balance  falls below the minimum  initial  investment.  The
Portfolio  will  deduct a $10  annual  fee in either  June or  December  if your
nonretirement  account  balance falls below $2,500 or if your UGMA/UTMA  account
balance  falls  below  $500.  The fee is waived if your total  Vanguard  account
assets are $50,000 or more.


Some written  requests  require a signature  guarantee from a bank,  broker,  or
other  acceptable  financial  institution.  A notary  public  cannot  provide  a
signature guarantee.

HOW TO EXCHANGE SHARES

An exchange is the selling of shares of one Vanguard fund to purchase  shares of
another.

   Although we make every effort to maintain the  exchange  privilege,  Vanguard
reserves the right to revise or  terminate  the  exchange  privilege,  limit the
amount of an exchange, or reject any exchange, at any time, without notice.


   Because  excessive  exchanges can  potentially  disrupt the management of the
Portfolio and increase  transaction costs,  Vanguard limits exchange activity to
TWO SUBSTANTIVE EXCHANGE REDEMPTIONS (at least 30 days apart) from the Portfolio
during any 12-month  period.  "Substantive"  means  either a dollar  amount or a
series of movements between Vanguard funds that Vanguard determines, in its sole
discretion, could have an adverse impact on the management of the Portfolio.


   Before you exchange into a new Vanguard fund, be sure to read its prospectus.
For a  copy  and  for  answers  to  questions  you  might  have,  call  Investor
Information.

                                       18

<PAGE>

REDEEMING SHARES (continued)

SELLING OR EXCHANGING SHARES       ACCOUNT TYPE

BY TELEPHONE                       ALL TYPES EXCEPT RETIREMENT:
[TELEPHONE]                        Call Vanguard Tele-Account* 24 hours a day--
1-800-662-6273                     or Client Services during business hours--to
Vanguard Tele-Account              sell or exchange shares. You can exchange
1-800-662-2739                     shares from this Portfolio to open an
Client Services                    account in another Vanguard fund or to add to
                                   an existing Vanguard fund account with an
                                   identical registration.

                                   RETIREMENT:
                                   You can exchange--but not sell--shares by
                                   calling Tele-Account or Client Services.

                                   *You must obtain a Personal Identification
                                   Number through Tele-Account at least seven
                                   days before you request your first
                                   redemption.


BY MAIL                            ALL TYPES EXCEPT RETIREMENT:
[ENVELOPE]                         Send a letter of instruction signed by all
FIRST-CLASS mail to:               registered account holders. Include the
The Vanguard Group                 Portfolio name and account number and (if you
Vanguard/Trustees' Equity Fund-    are selling) a dollar amount or number of
U.S. Portfolio                     shares OR (if you are exchanging) the name of
P.O. Box 1120                      the fund you want to exchange into and a
Valley Forge, PA 19482-1120        dollar  amount or number of shares. To
                                   exchange into an account with a different
EXPRESS or REGISTERED mail to:     registration (including a different name,
The Vanguard Group                 address, or taxpayer identification number),
Vanguard/Trustees' Equity Fund-    you must provide Vanguard with written
U.S. Portfolio                     instructions that include the guaranteed
455 Devon Park Drive               signatures of all current account owners.
Wayne, PA 19087-1815
                                   RETIREMENT:
                                   For information on how to request
                                   distributions from:
                                   o Traditional IRAs, Roth IRAs, Education
                                     IRAs--call Client Services.
                                   o SEP-IRAs, SIMPLE IRAs, 403(b)(7) custodial
                                     accounts, and Profit-Sharing and Money
                                     Purchase Pension (Keogh) Plans--call
                                     Individual Retirement Plans at
                                     1-800-662-2003.
                                   Depending on your account registration type,
                                   additional documentation may be required.

EXCHANGING SHARES ONLINE           You may use your personal computer to
[COMPUTER]                         exchange shares of most Vanguard funds by
                                   accessing our website (www.vanguard.com). To
                                   establish this service for your account, you
                                   must first register through the website. We
                                   will then send to you, by mail, an account
                                   access password that will enable you to make
                                   online exchanges.

                                   The Vanguard funds that you cannot purchase
                                   or sell through online exchange are VANGUARD
                                   INDEX TRUST, VANGUARD BALANCED INDEX FUND,
                                   VANGUARD INTERNATIONAL EQUITY INDEX FUND,
                                   VANGUARD REIT INDEX PORTFOLIO, VANGUARD TOTAL
                                   INTERNATIONAL PORTFOLIO, and VANGUARD GROWTH
                                   AND INCOME PORTFOLIO (formerly known as
                                   Vanguard Quantitative Portfolios). These
                                   funds do permit online exchanges within IRAs
                                   and other retirement accounts.


AUTOMATICALLY                      ALL TYPES EXCEPT RETIREMENT:
[CIRCLE OF ARROWS]                 Vanguard offers several ways to sell or
                                   exchange shares automatically (see "Services
                                   and Account Features"). Call Investor
                                   Information for the appropriate booklet and
                                   application if you did not elect this feature
                                   when you opened your account.

                                       19

<PAGE>

REDEEMING SHARES (continued)

   It is  important  that you call  Vanguard  before you  redeem a large  dollar
amount.  We must  consider the interests of all  Portfolio  shareholders  and so
reserve the right to delay  delivery of your  redemption  proceeds--up  to seven
days--if the amount will disrupt the Portfolio's operation or performance.

                        A NOTE ON UNUSUAL CIRCUMSTANCES

Vanguard  reserves the right to revise or  terminate  the  telephone  redemption
privilege at any time,  without notice.  In addition,  Vanguard can stop selling
shares or postpone  payment at times when the New York Stock  Exchange is closed
or under any emergency  circumstances  as determined by the U.S.  Securities and
Exchange Commission.  If you experience difficulty making a telephone redemption
during  periods  of  drastic  economic  or market  change,  you can send us your
request  by  regular or express  mail.  Follow  the  instructions  on selling or
exchanging shares by mail in the "Redeeming Shares" section.


TRANSFERRING REGISTRATION

HOW TO TRANSFER SHARES

You may transfer the  registration  of any of your  Portfolio  shares to another
owner by  completing  a transfer  form and  sending it to: The  Vanguard  Group,
Attention: Transfer Department, P.O. Box 1110, Valley Forge, PA 19482-1110.


PORTFOLIO AND ACCOUNT UPDATES

STATEMENTS AND REPORTS


We will send you clear,  concise  account  and tax  statements  to help you keep
track of your Vanguard/Trustees'  Equity Fund-U.S.  Portfolio account throughout
the year as well as when you are preparing your income tax returns.

   In addition,  you will receive  financial reports about the Portfolio twice a
year.  These  comprehensive  reports  include an assessment  of the  Portfolio's
performance  (and a comparison  to its industry  benchmark),  an overview of the
markets, a report from the adviser, a listing of the Portfolio's  holdings,  and
other financial statements. To keep the Portfolio's costs as low as possible (so
that you and  other  shareholders  can keep more of the  Portfolio's  investment
earnings),  Vanguard  attempts  to  eliminate  duplicate  mailings  to the  same
address. When we find that two or more Portfolio shareholders have the same last
name and address, we send just one Portfolio report to that  address--instead of
mailing  separate reports to each  shareholder.  If you want us to send separate
reports,  however,  you  may  notify  our  Investor  Information  Department  at
1-800-662-7447.


                                       20

<PAGE>

PORTFOLIO AND ACCOUNT UPDATES (continued)

CONFIRMATION STATEMENT             Sent each time you buy, sell, or exchange
                                   shares; confirms the trade date and the
                                   amount of your transaction.

PORTFOLIO SUMMARY                  Mailed quarterly; shows the market value of
[BOOK]                             your account at the close of the statement
                                   period, as well as distributions, purchases,
                                   sales, and exchanges for the current calendar
                                   year.

FUND FINANCIAL REPORTS             Mailed in February and August for this
                                   Portfolio.

TAX STATEMENTS                     Generally mailed in January; report previous
                                   year's dividend distributions, proceeds from
                                   the sale of shares, and distributions from
                                   IRAs or other retirement accounts.

AVERAGE COST STATEMENT             Issued quarterly for most taxable accounts
[BOOK]                             (accompanies your Portfolio Summary); shows
                                   the average cost of shares that you redeemed
                                   during the calendar year, using the average
                                   cost single category method.

AUTOMATED TELEPHONE ACCESS

VANGUARD TELE-ACCOUNT              Toll-free access to Vanguard fund and account
1-800-662-6273                     information--as well as some transactions--
Any time, seven days a week,       through any touch-tone telephone. Tele-
from anywhere in the continental   Account provides total return, share price,
United States.                     price change, and yield quotations for all
[BOOK]                             Vanguard funds; gives your account balances
                                   and history (e.g., last transaction, latest
                                   dividend distribution); and allows you to
                                   sell or exchange fund shares.

COMPUTER ACCESS

VANGUARD ONLINE(R)                 Use your personal computer to learn more
www.vanguard.com                   about Vanguard's funds and services; keep in
                                   touch with your Vanguard accounts; map out a
                                   long-term investment strategy; initiate
                                   certain transactions; and ask questions, make
                                   suggestions, and send messages to Vanguard.

                                   Our education-oriented website provides
                                   timely news and information about Vanguard's
                                   funds and services; an online "university"
                                   that offers a variety of mutual fund classes;
                                   and easy-to-use, interactive tools to help
                                   you create your own investment and retirement
                                   strategies.

                                       21

<PAGE>

PROSPECTUS POSTSCRIPT

This  prospectus  is designed to provide you with  pertinent  information  about
Vanguard/Trustees'   Equity  Fund-U.S.   Portfolio,   including  its  investment
objectives,  risks, strategy, and expenses, as well as services available to you
as a shareholder.

   It is  important  that you  understand  these  facts  so that you can  decide
whether an investment in the Portfolio is right for you. The following questions
offer a quick review of some of the subjects covered by this prospectus.

IN READING THE PROSPECTUS, DID YOU LEARN:

   o  The Portfolio's objectives? (page 4)

   o  The Portfolio's investment strategy? (page 5)

   o  Who should invest in the Portfolio? (page 4)

   o  The risks associated with the Portfolio? (pages 4-8)

   o  Whether the Portfolio is federally insured? (inside front cover)

   o  The Portfolio's expenses? (page 2)

   o  The background of the Portfolio's investment manager? (page 11)

   o  How to open an account? (page 16)

   o  How to sell or exchange shares? (pages 18-20)

   o  How often you'll receive statements and financial reports? (page 20)

                               PLAIN TALK ABOUT

                            KEEPING YOUR PROSPECTUS

          Reading  this  prospectus  will help you to  decide  whether
          Vanguard/  Trustees' Equity Fund-U.S.  Portfolio is suitable
          for your investment  goals.  If you decide to invest,  don't
          throw  the  prospectus  out;  you will no doubt  need it for
          future reference.

                                       22

<PAGE>

AN INVESTMENT PRIMER

Whether you are investing for the short or long term, keep these three points in
mind:

1. INVEST IN ALL THREE OF THE MAJOR ASSET CLASSES.

Most people use a combination of . . .

   o  Stocks,  which are  considered  the "riskiest" of the three asset classes.
      Day to day, or even year to year,  stocks tend to have wide price  swings.
      Despite this potential for significant price fluctuation,  however, stocks
      have  historically  offered  higher  returns  than the other  major  asset
      classes over longer periods.

   o  Bonds,  which are chiefly  influenced by changes in interest  rates.  When
      interest rates climb,  bond prices drop;  when interest  rates fall,  bond
      prices rise.

   o  Cash reserves,  which offer more  share-price (or capital)  stability than
      stocks or  bonds--but  also  generate  lower  returns.  Some  examples are
      Treasury bills and money market funds.

2. REMEMBER THAT SAFETY HAS A PRICE.

Many people want a "no-risk" investment.  Remember, though, that the more safety
you seek, the less potential  reward you can expect--and the less you can expect
in returns  after  inflation.  Inflation  affects not only the price you pay for
goods and services; it also eats away at your investment returns over time. What
is left is known as your "real"  return--the actual return you receive after you
factor in inflation (see the chart at right).

3. CHANCES ARE GOOD THAT YOU CAN AFFORD TO TAKE MORE RISK.

As the chart shows,  inflation cuts into the returns of all three asset classes.
However,  stocks and bonds have had an easier time of outpacing  inflation  over
time--which  means  that,  to beat  inflation,  you  may  need  to  invest  more
aggressively.

   Don't be put off by  potential  downswings  in the value of your  investment,
especially if you are investing for long periods. Time acts as a shock absorber,
letting you ride out the short-term  bumps that investments  often provide.  The
longer  you hold an  investment,  the  more  likely  it is that you will  earn a
positive return.

                                PLAIN TALK ABOUT

                         INFLATION AND YOUR INVESTMENTS

          No matter how you invest your money,  inflation--the  rising
          cost of  living--is  a  constant  threat to your  investment
          returns.  The chart below shows how stocks,  bonds, and cash
          reserves have fared against inflation over time.

                        INFLATION'S EFFECT ON
                          INVESTMENT RETURNS
                             (1926-1997)

Source:  [COPYRIGHT]  Stocks,  Bonds,  Bills,  and Inflation 1998  Yearbook(TM),
Ibbotson Associates, Chicago (annually updates work by Roger G. Ibbotson and Rex
A. Sinquefield). Used with permission. All rights reserved.

                                  23

<PAGE>

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION

Payment  to  mutual  fund  shareholders  of gains  realized  during  the year on
securities that the fund has sold at a profit, minus any realized losses.

CASH RESERVES

Cash deposits as well as short-term  bank  deposits,  money market  instruments,
U.S. Treasury bills, bank certificates of deposit (CDs),  repurchase agreements,
commercial paper, and banker's acceptances.

COMMON STOCK

A security  representing  ownership  rights in a  corporation.  A stockholder is
entitled  to share in the  company's  profits,  some of which may be paid out as
dividends.

DIVIDEND INCOME

Payment to  shareholders  of income from  interest or  dividends  generated by a
fund's investments.

DOLLAR-COST AVERAGING

Investing equal amounts of money at regular  intervals on an ongoing basis. This
technique  ensures  that an investor  buys fewer shares when prices are high and
more shares when prices are low.

EXPENSE RATIO

The  percentage  of a fund's  average net assets used to pay its  expenses.  The
expense ratio  includes  management  fees,  administrative  fees,  and any 12b-1
marketing fees.

FIXED-INCOME SECURITIES

Investments,  such as bonds, that have a fixed payment schedule. While the level
of income  offered  by these  securities  is  predetermined,  their  prices  may
fluctuate.

GROWTH AND INCOME STOCK FUND

A mutual fund that seeks moderate capital  appreciation and some dividend income
by investing primarily in stocks.

GROWTH STOCK FUND

A mutual fund that  emphasizes  stocks of companies  whose  strong  earnings and
revenue potential indicate above-average prospects for capital growth, with less
emphasis on dividend income.

INVESTMENT ADVISER

An  organization  that makes the  day-to-day  decisions  regarding a portfolio's
investments.

MUTUAL FUND

An  investment  company  that pools the money of many people and invests it in a
variety of securities in an effort to achieve a specific objective over time.

NET ASSET VALUE (NAV)

The market value of a mutual fund's total assets, minus liabilities,  divided by
the  number of shares  outstanding.  The value of a single  share is called  its
share value or share price.

PORTFOLIO DIVERSIFICATION

Holding a variety of securities so that a portfolio's  return is not hurt by the
poor performance of a single security or industry.

PRICE/EARNINGS (P/E) RATIO

The current share price of a stock,  divided by its per-share earnings (profits)
from the past year. A stock selling for $20, with earnings of $2 per share,  has
a price/earnings ratio of 10.

PRINCIPAL

The amount of your own money you put into an investment.

SECURITIES

Stocks, bonds, and other investment vehicles.

TOTAL RETURN

A percentage change,  over a specified time period, in a mutual fund's net asset
value,  with the ending net asset value adjusted to account for the reinvestment
of all distributions of dividends and capital gains.

VALUE STOCK FUND

A mutual fund that focuses on the stocks of companies  that,  considering  their
earnings and dividends,  are  attractively  priced;  these  companies  often pay
regular dividend income to shareholders.

VOLATILITY

The  fluctuations  in value of a mutual  fund or other  security.  The greater a
fund's volatility, the wider the fluctuations between its high and low prices.

YIELD

Current income (interest or dividends)  earned by an investment,  expressed as a
percentage of the investment's price.

<PAGE>

[VANGUARD SHIP LOGO]

Post Office Box 2600
Valley Forge, PA 19482

INVESTOR INFORMATION
DEPARTMENT
1-800-662-7447 (SHIP)
TEXT TELEPHONE:
1-800-952-3335
For information on our funds, fund services,  and retirement accounts;  requests
for literature

CLIENT SERVICES DEPARTMENT
1-800-662-2739 (CREW)
TEXT TELEPHONE:
1-800-662-2738
For information on your account, account transactions, and account statements

VANGUARD BROKERAGE
SERVICES
1-800-992-8327
For information on trading stocks, bonds, and options at reduced commissions

VANGUARD TELE-ACCOUNT(R)
1-800-662-6273 (ON-BOARD)
For 24-hour  automated  access to price and yield,  information on your account,
and certain transactions

ELECTRONIC ACCESS TO THE VANGUARD MUTUAL FUND EDUCATION AND INFORMATION CENTER
World Wide Web
www.vanguard.com

E-mail
[email protected]

[COPYRIGHT] 1998 Vanguard Marketing Corporation, Distributor

P025N
<PAGE>


VANGUARD/TRUSTEES'  
EQUITY FUND- U.S. PORTFOLIO  
Institutional  Prospectus 
April
30, 1998

A Portfolio of Vanguard/ Trustees' Equity Fund

This  prospectus  contains  financial data for the Portfolio  through the fiscal
year ended December 31, 1997.


[VANGUARD LOGO]

<PAGE>

VANGUARD/TRUSTEES' EQUITY FUND-
U.S. Portfolio                  A Growth and Income Stock Mutual Fund

CONTENTS
Portfolio Profile                            1
Portfolio Expenses                           2
Financial Highlights                         3
A Word About Risk                            4
The Portfolio's Objectives                   4
Who Should Invest                            4
Investment Strategy                          5
Investment Policies                          7
Investment Limitations                       8
Investment Performance                       9
Share Price                                 10
Dividends, Capital Gains, and Taxes         10
The Portfolio and Vanguard                  11
Investment Adviser                          11
General Information                         12
Investing with Vanguard
o For Plan Participants                     13
o For Other Institutional Investors         13
Accessing Fund Information by Computer      14
Prospectus Postscript                       15
Investment Primer                           16
Glossary                     Inside Back Cover

INVESTMENT OBJECTIVE AND POLICIES

Vanguard/Trustees' Equity Fund-U.S. Portfolio (the "Portfolio") is a diversified
mutual fund, a part of Vanguard/Trustees'  Equity Fund (the "Fund"), an open-end
investment company.

   The Portfolio seeks to provide  long-term  capital growth and a modest amount
of income by investing in the stocks of U.S. companies.  The Portfolio uses both
"value" and "growth" investment strategies.  About 50% to 70% of the Portfolio's
assets are  invested in  companies  whose  stocks,  according  to the  Portfolio
adviser,  are  undervalued.  The  remaining 30% to 50% of assets are invested in
companies with a history of sales and earnings growth or, the adviser  believes,
an expectation of growth.

   IT IS IMPORTANT TO NOTE THAT THE  PORTFOLIO'S  SHARES ARE NOT  GUARANTEED  OR
INSURED  BY THE FDIC OR ANY  OTHER  AGENCY OF THE U.S.  GOVERNMENT.  AS WITH ANY
INVESTMENT IN COMMON STOCKS,  WHICH ARE SUBJECT TO WIDE  FLUCTUATIONS  IN MARKET
VALUE, YOU COULD LOSE MONEY BY INVESTING IN THE PORTFOLIO.

FEES AND EXPENSES

The Portfolio is offered on a no-load  basis,  which means that you pay no sales
commissions  or 12b-1  marketing  fees.  You will,  however,  incur expenses for
investment  advisory,  management,  administrative,  and distribution  services,
which are included in the expense ratio.

IMPORTANT NOTE

This prospectus is intended for  institutional  clients and for  participants in
employer-sponsored  retirement or savings plans. Another version--for  investors
who would like to open a personal investment account--can be obtained by calling
Vanguard at 1-800-662-7447.

ADDITIONAL INFORMATION ABOUT THE PORTFOLIO


A Statement of Additional  Information  (dated April 30, 1998)  containing  more
information  about the Portfolio is, by reference,  part of this  prospectus and
may be  obtained  without  charge by  contacting  Vanguard  (see back  cover) or
visiting the Securities and Exchange Commission's website (www.sec.gov).


WHY READING THIS PROSPECTUS IS IMPORTANT

This  prospectus  explains  the  objectives,  risks,  and  strategy  of the U.S.
Portfolio of  Vanguard/Trustees'  Equity Fund.  To highlight  terms and concepts
important to mutual fund investors,  we have provided "Plain Talk"  explanations
along the way.  Reading  the  prospectus  will help you to  decide  whether  the
Portfolio is the right  investment  for your needs.  We suggest that you keep it
for future reference.

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION,  NOR HAS THE SECURITIES AND EXCHANGE COMMISSION PASSED UPON
THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY
IS A CRIMINAL OFFENSE.

<PAGE>

PORTFOLIO PROFILE                  Vanguard/Trustees' Equity Fund-U.S. Portfolio

WHO SHOULD INVEST (page 4)

   o  Investors  seeking a growth  and  income  stock  mutual  fund as part of a
      balanced and diversified investment program.

   o  Investors  seeking  capital  growth and some income over the long term--at
      least five years.

   o  Investors  seeking a fund that  employs  both value and growth  investment
      strategies.

WHO SHOULD NOT INVEST

   o  Investors seeking significant current income.

   o  Investors unwilling to accept significant fluctuations in share price.

RISKS OF THE PORTFOLIO (pages 4-8)

The Portfolio's  total return will fluctuate within a wide range, so an investor
could lose money over short or even extended  periods.  The Portfolio is subject
to manager risk (the chance that poor  security  selection  will cause it to lag
the stock market as a whole) and to objective risk (the chance that returns from
either value stocks or growth  stocks will trail  returns from the overall stock
market).

DIVIDENDS AND CAPITAL GAINS (page 10)

Dividends  are paid in June and  December.  Capital  gains,  if any, are paid in
December.   In  participant   accounts,   all  distributions  are  automatically
reinvested.

INVESTMENT ADVISER (page 11)

Geewax, Terker & Company, Phoenixville, Pa.

INCEPTION DATE: January 31, 1980


NET ASSETS AS OF 12/31/1997: $174 million

PORTFOLIO'S EXPENSE RATIO FOR THE YEAR ENDED 12/31/1997: 0.53%


LOADS, 12B-1 MARKETING FEES: None

NEWSPAPER ABBREVIATION: TrUS

VANGUARD FUND NUMBER: 025

CUSIP NUMBER: 921939104

QUOTRON SYMBOL: VTRSX.Q

AVERAGE ANNUAL TOTAL RETURNS--YEARS ENDED DECEMBER 31, 1997
<TABLE>
<CAPTION>

                         1 YEAR    5 YEARS    10 YEARS
<S>                      <C>       <C>        <C>
                         -----------------------------
U.S. Portfolio            29.5%     18.7%      15.6%
S&P 500 Index             33.4      20.3       18.1
</TABLE>


QUARTERLY RETURNS (%) 1988-1997 (intended to show volatility of returns)

                                    [GRAPH]

IN EVALUATING  PAST  PERFORMANCE,  REMEMBER THAT IT IS NOT  INDICATIVE OF FUTURE
PERFORMANCE  AND THAT RETURNS FROM STOCKS BEFORE  ADJUSTING  FOR INFLATION  WERE
RELATIVELY  HIGH  DURING THE  PERIODS  SHOWN.  PERFORMANCE  FIGURES  INCLUDE THE
REINVESTMENT OF ANY DIVIDEND AND CAPITAL GAINS DISTRIBUTIONS.  THE RETURNS SHOWN
ARE NET OF EXPENSES, BUT THEY DO NOT REFLECT INCOME TAXES AN INVESTOR WOULD HAVE
INCURRED.  NOTE,  TOO, THAT BOTH THE RETURN AND PRINCIPAL VALUE OF AN INVESTMENT
WILL FLUCTUATE,  SO THAT INVESTORS' SHARES, WHEN REDEEMED,  MAY BE WORTH MORE OR
LESS THAN THEIR ORIGINAL COST.

                                       1

<PAGE>

PORTFOLIO EXPENSES

The examples  below are designed to help you  understand  the various  costs you
would bear, directly or indirectly, as an investor in the Portfolio.

   As noted in this table,  you do not pay fees of any kind when you buy,  sell,
or exchange shares of the Portfolio:

SHAREHOLDER TRANSACTION EXPENSES
Sales Load Imposed on Purchases:                 None
Sales Load Imposed on Reinvested Dividends:      None
Redemption Fees:                                 None
Exchange Fees:                                   None


   The next table  illustrates the operating  expenses that you would incur as a
shareholder of the Portfolio.  These expenses are deducted from the  Portfolio's
income before it is paid to you.  Expenses include  investment  advisory fees as
well  as  the  costs  of  maintaining  accounts,  administering  the  Portfolio,
providing shareholder services, and other activities.  The expenses shown in the
table are based upon those incurred in the fiscal year ended December 31, 1997.


                                PLAIN TALK ABOUT

                             THE COSTS OF INVESTING

          Costs are an  important  consideration  in choosing a mutual
          fund. That's because you, as a shareholder, pay the costs of
          operating a fund plus any transaction  costs associated with
          buying, selling, or exchanging shares. These costs can erode
          a  substantial  portion  of  the  gross  income  or  capital
          appreciation   a  fund  achieves.   Even   seemingly   small
          differences in fund expenses can, over time, have a dramatic
          impact on a fund's performance.
<TABLE>
<CAPTION>


ANNUAL PORTFOLIO OPERATING EXPENSES
<S>                                                  <C>         <C>

Management and Administrative Expenses:                           0.25%
Investment Advisory Expenses:                                     0.22%
12b-1 Marketing Fees:                                              None
Other Expenses
   Marketing and Distribution Costs:                  0.02%
   Miscellaneous Expenses (e.g., Taxes, Auditing):    0.04%
Total Other Expenses:                                             0.06%
                                                                  ----
   TOTAL OPERATING EXPENSES (EXPENSE RATIO):                      0.53%
                                                                  ====
</TABLE>


   The  following  example is intended to help you compare the cost of investing
in  the  Portfolio  with  the  cost  of  investing  in  other  mutual  funds  by
illustrating  the  hypothetical  expenses  that  you  would  incur  on a  $1,000
investment  over various  periods.  The example  assumes that (1) the  Portfolio
provides a return of 5% a year and (2) you redeem your  investment at the end of
each period.
<TABLE>

<CAPTION>

                         -----------------------------------
<S>                      <C>      <C>      <C>      <C>
                         1 YEAR   3 YEARS  5 YEARS  10 YEARS
                         -----------------------------------
                           $5       $17      $30      $66
                         -----------------------------------
</TABLE>


THIS EXAMPLE  SHOULD NOT BE CONSIDERED A  REPRESENTATION  OF ACTUAL  EXPENSES OR
PERFORMANCE  FROM THE PAST OR FOR THE FUTURE,  WHICH MAY BE HIGHER OR LOWER THAN
THOSE SHOWN.

                           PLAIN TALK ABOUT

                            FUND EXPENSES

          All mutual funds have operating  expenses.  These  expenses,
          which are deducted from a fund's gross income, are expressed
          as a  percentage  of the net  assets of the  fund.  The U.S.
          Portfolio's  expense ratio in fiscal year 1997 was 0.53%, or
          $5.30 per $1,000 of average net assets.  The average  growth
          and income equity mutual fund had expenses in 1997 of 1.20%,
          or $12 per $1,000 of average net assets, according to Lipper
          Analytical  Services,  which  reports  on  the  mutual  fund
          industry.

                                       2

<PAGE>

FINANCIAL HIGHLIGHTS

The  following  financial  highlights  table  shows  the  results  for  a  share
outstanding  of the  Portfolio  for each of the fiscal years in the decade ended
December  31, 1997.  The  financial  statements  that  include  these  financial
highlights were audited by Price Waterhouse LLP,  independent  accountants.  You
should read this  information  in  conjunction  with the  Portfolio's  financial
statements and  accompanying  notes,  which appear,  along with the audit report
from Price  Waterhouse  LLP, in the  Portfolio's  most recent  annual  report to
shareholders. The annual report is incorporated by reference in the Statement of
Additional  Information  and in this  prospectus,  and contains a more  complete
discussion of the Portfolio's  performance.  You may have the report sent to you
without charge by writing to or calling Vanguard (see back cover).

   From time to time,  the  Vanguard  funds  advertise  yield  and total  return
figures. Yield is a historical measure of dividend income, and total return is a
measure of past dividend  income  (assuming  that it has been  reinvested)  plus
realized and unrealized capital appreciation  (depreciation).  Neither yield nor
total return should be used to predict the future performance of a fund.
<TABLE>

<CAPTION>

- ------------------------------------------------------------------------------------------------------------------------------------
                                                                           YEAR ENDED DECEMBER 31,
<S>                                          <C>      <C>     <C>      <C>      <C>      <C>     <C>       <C>     <C>      <C>
                                             ---------------------------------------------------------------------------------------
                                              1997     1996     1995    1994     1993     1992     1991     1990    1989     1988
- ------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, BEGINNING OF YEAR           $37.08   $37.01   $29.09  $30.65   $28.43   $28.20  $22.90    $26.15  $26.35   $22.77
INVESTMENT OPERATIONS
   Net Investment Income                        .44      .65      .62     .34      .43      .68     .71      1.02     .87     1.02
   Net Realized and Unrealized
      Gain (Loss) on Investments               9.64     6.87     8.96   (1.53)    4.38     1.08    5.30     (3.19)   3.62     4.53
      TOTAL FROM INVESTMENT OPERATIONS        10.08     7.52     9.58   (1.19)    4.81     1.76    6.01     (2.17)   4.49     5.55
- ------------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
   Dividends from Net
      Investment Income                        (.43)   (.67)    (.61)    (.34)    (.43)    (.67)   (.71)    (1.08)   (.88)    (.97)
   Distributions from Realized
      Capital Gains                           (9.91)  (6.78)   (1.05)    (.03)   (2.16)    (.86)     --       --     3.81)   (1.00)
TOTAL DISTRIBUTIONS                          (10.34)  (7.45)   (1.66)    (.37)   (2.59)   (1.53)   (.71)    (1.08)  (4.69)   (1.97)
- ------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR                 $36.82  $37.08   $37.01   $29.09   $30.65   $28.43  $28.20    $22.90   $26.15   $26.35
====================================================================================================================================
TOTAL RETURN                                  29.48%  21.30%   33.21%   -3.91%   17.24%    6.45%  26.57%    -8.33%   17.23%   24.64%
====================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Year (Millions)             $174    $158     $137     $113     $119      $68    $115      $100     $121     $115
Ratio of Total Expenses to
   Average Net Assets                          0.53%   0.49%    0.56%    0.73%    0.90%    0.65%   0.44%     0.52%    0.51%    0.58%
Ratio of Net Investment Income to
   Average Net Assets                          1.09%   1.68%    1.79%    1.14%    1.43%    2.33%   2.67%     4.18%    2.90%    3.86%
Portfolio Turnover Rate                         139%    114%      77%     151%     139%     209%     84%       81%      72%      90%
Average Commission Rate Paid                 $.0480  $.0534       N/A      N/A      N/A      N/A     N/A       N/A      N/A      N/A
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                           PLAIN TALK ABOUT

              HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE

          The  Portfolio  began  fiscal  1997 with a net  asset  value
          (price) of $37.08 per share.  During the year, the Portfolio
          earned $0.44 per share from investment  income (interest and
          dividends)  and $9.64 per share  from  investments  that had
          appreciated  in value or that  were sold for  higher  prices
          than the Portfolio  paid for them. In all,  $10.34 per share
          was returned to  shareholders  in the form of  distributions
          ($0.43 in dividends,  $9.91 in capital gains). This resulted
          in a  share  price  of  $36.82  at the  end of the  year,  a
          decrease of $0.26 per share (from $37.08 at the beginning of
          the year to $36.82 at the end of the  year).  Assuming  that
          the  shareholder  had  reinvested  the  distribution  in the
          purchase of more shares, total return from the Portfolio was
          29.48% for the year.

             As of December 31, 1997,  the  Portfolio had $174 million
          in net assets;  an expense  ratio of 0.53% ($5.30 per $1,000
          of net assets); and net investment income amounting to 1.09%
          of its average net assets.  It sold and replaced  securities
          valued at 139% of its total net assets.

                                       3

<PAGE>

A WORD ABOUT RISK

This  prospectus  describes  the risks you would face as an investor in the U.S.
Portfolio of Vanguard/Trustees' Equity Fund. It is important to keep in mind one
of the main axioms of investing: The higher the risk of losing money, the higher
the potential reward. The reverse,  also, is generally true: The lower the risk,
the lower the potential  reward.  However,  as you consider an investment in the
U.S.  Portfolio,  you should also take into account your personal  tolerance for
the daily fluctuations of the stock market.

   Look for this "warning flag" symbol [FLAG]  throughout the prospectus.  It is
used to mark  detailed  information  about  each  type of risk  that  you,  as a
shareholder of the Portfolio, would confront.

THE PORTFOLIO'S OBJECTIVES

Vanguard/Trustees' Equity Fund-U.S. Portfolio seeks to provide long-term capital
growth and a modest amount of income.  These objectives are  fundamental,  which
means that they cannot be changed unless a majority of  shareholders  vote to do
so.

   [FLAG] BECAUSE OF THE SEVERAL TYPES OF RISK DESCRIBED ON THE FOLLOWING PAGES,
          YOUR  INVESTMENT IN THE  PORTFOLIO,  AS WITH ANY  INVESTMENT IN COMMON
          STOCKS, COULD LOSE MONEY.

WHO SHOULD INVEST

The Portfolio may be a suitable investment for you if:

   o  You wish to add a growth and income stock fund to your existing  holdings,
      which could  include  other  stock--as  well as bond,  money  market,  and
      tax-exempt--investments.

   o  You are seeking growth of capital over the long term--at least five years.

   o  You are looking for some dividend income.

   o  You characterize your investment temperament as "relatively aggressive."

   This  Portfolio is not an appropriate  investment if you are a  market-timer.
Investors  who  engage  in  excessive   in-and-out   trading  activity  generate
additional  costs  that are  borne by all of the  Portfolio's  shareholders.  To
minimize such costs, which reduce the ultimate returns achieved by you and other
shareholders, the Portfolio has adopted the following policies:

   o  The Portfolio reserves the right to reject any purchase request--including
      exchanges from other Vanguard  funds--that it regards as disruptive to the
      efficient management of the Portfolio. This could be because of the timing
      of the  investment  or because of a history  of  excessive  trading by the
      investor.

                           PLAIN TALK ABOUT

                     INVESTING FOR THE LONG TERM

          The  Portfolio  is  intended  to be a  long-term  investment
          vehicle  and is not  designed  to provide  investors  with a
          means of speculating on short-term fluctuations in the stock
          market.

                                       4

<PAGE>

   o  There is a limit on the  number of times you can  exchange  into or out of
      the Portfolio.  If you own shares of the Portfolio as an investment option
      in an  employer-sponsored  retirement or savings plan,  your plan dictates
      the  rules  governing  exchanges.  Contact  your  plan  administrator  for
      details.

   o  The Portfolio reserves the right to stop offering shares at any time.

INVESTMENT STRATEGY

This  section  explains  how the  investment  adviser  pursues  the  Portfolio's
objectives of long-term  capital growth and some income.  It also explains three
important  risks--market  risk,  objective  risk,  and  manager  risk--faced  by
investors in the Portfolio.  Unlike the Portfolio's investment  objectives,  the
adviser's  investment  strategy  is not  fundamental  and can be  changed by the
Fund's Board of Trustees without shareholder  approval.  However,  before making
any important  change in its strategy,  the Portfolio will give  shareholders 30
days' notice, in writing.

                           PLAIN TALK ABOUT

                       COSTS AND MARKET-TIMING

          Some investors try to profit from "market-timing"--switching
          money into  investments when they expect prices to rise, and
          taking  money out when they  expect the  market to fall.  As
          money is  shifted  in and out, a fund  incurs  expenses  for
          buying and selling securities.  These costs are borne by all
          fund shareholders,  including the long-term investors who do
          not generate the costs.  Therefore,  the Portfolio  tries to
          discourage   short-term  trading  by,  among  other  things,
          closely monitoring daily transactions.

MARKET EXPOSURE

The Portfolio invests in common stocks of U.S. companies. Between 50% and 70% of
the  Portfolio's  assets  are  invested  in common  stocks  that  display  value
investment characteristics;  the remaining portion of the Portfolio's assets are
invested in growth-oriented common stocks.

   [FLAG] THE PORTFOLIO IS SUBJECT TO MARKET RISK, WHICH IS THE POSSIBILITY THAT
          STOCK PRICES OVERALL WILL DECLINE OVER SHORT OR EVEN EXTENDED PERIODS.
          STOCK  MARKETS  TEND TO MOVE IN CYCLES,  WITH  PERIODS OF RISING STOCK
          PRICES AND PERIODS OF FALLING STOCK PRICES.

   To illustrate the volatility of stock prices,  the following  table shows the
best,  worst,  and average total returns  (dividend income plus change in market
value)  for the U.S.  stock  market  over  various  periods as  measured  by the
Standard & Poor's 500 Composite  Stock Price Index,  a widely used  barometer of
stock market  activity.  Note that the returns shown do not include the costs of
buying  and  selling  stocks  or other  expenses  that a  real-world  investment
portfolio would incur.  Note,  also, how the gap between best and worst tends to
narrow over the long term.
<TABLE>

<CAPTION>

- --------------------------------------------------------------------
                               U.S. STOCK MARKET RETURNS (1926-1997)
- --------------------------------------------------------------------
<S>                            <C>      <C>      <C>      <C>
                               1 YEAR   5 YEARS  10 YEARS 20 YEARS
- --------------------------------------------------------------------
Best                            53.9%    23.9%    20.1%    16.9%
Worst                          -43.3    -12.5     -0.9      3.1
Average                         13.0     10.5     10.9     10.9
- --------------------------------------------------------------------
</TABLE>


                           PLAIN TALK ABOUT

                           GROWTH FUNDS AND
                             VALUE FUNDS

          Growth investing and value investing are two styles employed
          by stock fund  managers.  Growth  funds  generally  focus on
          companies  that,  due to their  strong  earnings and revenue
          potential, offer above-average prospects for capital growth,
          with less emphasis on dividend income. Value funds generally
          emphasize  companies  that,  considering  their  assets  and
          earnings history,  are attractively  priced; these companies
          often pay regular  dividend income to  shareholders.  Growth
          and  value  stocks  have,  in  the  past,  produced  similar
          long-term  returns,  though  each  has had  periods  when it
          outperformed  the other. In general,  growth funds appeal to
          investors  who will  accept  more  volatility  in hopes of a
          greater  increase  in  share  price  or who  prefer a higher
          portion  of the  fund's  returns  to come as  capital  gains
          (which may be taxed at lower  rates than  dividend  income).
          Value funds, by contrast,  are appropriate for investors who
          want some  dividend  income and the  potential  for  capital
          gains but are less tolerant of share-price fluctuations.

                                       5

<PAGE>


   The table  covers all of the 1-,  5-,  10-,  and  20-year  periods  from 1926
through  1997.  For example,  while the average  return on stocks for all of the
5-year periods was 10.5%,  returns for these 5-year periods ranged from a -12.5%
average  (from 1928  through  1932),  to 23.9% (from 1950 through  1954).  These
average  returns  reflect past  performance  on common  stocks and should not be
regarded as an  indication  of future  returns from either the stock market as a
whole or the Portfolio in particular.


   Finally, the U.S. Portfolio invests in large-, mid-, and small-capitalization
stocks. Mid- and small-cap stocks have historically been more volatile than--and
at times have performed quite  differently  from--the  large-cap stocks found in
the S&P 500 Index. For this reason and because the U.S.  Portfolio does not hold
the  same  securities  held in the S&P  Index or any  other  market  index,  the
performance  of the  Portfolio  will not  mirror the  returns of any  particular
index.

   [FLAG] THE PORTFOLIO IS SUBJECT TO OBJECTIVE  RISK,  WHICH IS THE POSSIBILITY
          THAT  RETURNS FROM EITHER  VALUE OR GROWTH  STOCKS WILL TRAIL  RETURNS
          FROM THE OVERALL  STOCK  MARKET.  AS GROUPS,  VALUE  STOCKS AND GROWTH
          STOCKS  TEND TO GO THROUGH  CYCLES OF  RELATIVE  UNDERPERFORMANCE  AND
          OUTPERFORMANCE  IN  COMPARISON  TO  COMMON  STOCKS IN  GENERAL.  THESE
          PERIODS HAVE, IN THE PAST, LASTED FOR AS LONG AS SEVERAL YEARS.

                           PLAIN TALK ABOUT

               LARGE-CAP, MID-CAP, AND SMALL-CAP STOCKS


          Stocks of publicly traded  companies--and  mutual funds that
          hold  these  stocks--can  be  classified  by the  companies'
          market   value,   or   capitalization.    Vanguard   defines
          large-capitalization,  or large-cap,  funds as those holding
          stocks  of  companies  with  a  median  total  market  value
          exceeding  $7.5  billion.   Mid-cap  funds  hold  stocks  of
          companies  with a median market value between $1 billion and
          $7.5 billion.  Small-cap funds hold stocks of companies with
          a median market value of less than $1 billion.


SECURITY SELECTION

Geewax, Terker & Company ("Geewax,  Terker"),  adviser to the Portfolio,  uses a
multistep process in evaluating and picking stocks for the Portfolio.

   In screening  stocks for the value portion of the Portfolio,  Geewax,  Terker
examines a company's financial statements; measures the market's response to the
company's  recent  earnings  announcements;  and  reviews  analyst  data to find
problems that may not be detected from the company's financial reports.

   To be considered for the U.S.  Portfolio's growth portion, a company must, in
Geewax,  Terker's opinion,  be financially sound and have the ability to finance
future growth;  be considered a "growth stock" by the general  market;  and have
earnings that are growing at a higher-than-expected rate.

                           PLAIN TALK ABOUT

                      PORTFOLIO DIVERSIFICATION

          In  general,  the more  diversified  a fund's  portfolio  of
          stocks,  the  less  likely  that  a  specific  stock's  poor
          performance  will hurt the  fund.  One  measure  of a fund's
          level of  diversification  is the  percentage  of total  net
          assets represented by its ten largest holdings.  The average
          U.S. equity mutual fund has about 25% of its assets invested
          in its ten  largest  holdings,  while some  less-diversified
          mutual  funds have 40% or more of their  assets  invested in
          the stocks of just ten companies.

                                  6

<PAGE>


   All value and growth stocks owned by the Portfolio  must pass this  screening
process.  The top ten holdings (which amounted to 21.8% of the Portfolio's total
net assets) as of December 31, 1997, follow.

         1. Intel Corp.
         2. General Electric Co.
         3. Merck & Co., Inc.
         4. Procter & Gamble Co.
         5. Wal-Mart Stores, Inc.
         6. Bristol-Myers Squibb Co.
         7. Standard & Poor's Depositary Receipts
         8. Morgan Stanley, Dean Witter, Discover and Co.
         9. Cisco Systems, Inc.
        10. Exxon Corp.


   Keep in mind that,  because the makeup of the Portfolio  changes daily,  this
listing is only a "snapshot" at one point in time.

   The Portfolio is run by Geewax,  Terker  according to traditional  methods of
active  investment  management,  which  means  securities  are  bought  and sold
according to Geewax,  Terker's  judgments  about  companies and their  financial
prospects, and about the stock market and the economy in general.

   [FLAG] THE  PORTFOLIO IS SUBJECT TO MANAGER  RISK,  WHICH IS THE  POSSIBILITY
          THAT GEEWAX, TERKER MAY DO A POOR JOB OF SELECTING STOCKS.

PORTFOLIO TURNOVER


Although the Portfolio  generally  seeks to invest for the long term, it retains
the right to sell  securities  regardless  of how long they have been held.  The
Portfolio's  average  turnover rate for the past ten years has been  high--about
116%--and has exceeded 100% in four of the past five years.  (A turnover rate of
100% would occur,  for example,  if the Portfolio  sold and replaced  securities
valued at 100% of its total net assets within a one-year period.)


                           PLAIN TALK ABOUT

                          PORTFOLIO TURNOVER

          Before  investing  in a mutual fund,  you should  review its
          portfolio  turnover  rate for an indication of the potential
          effect of transaction costs on the fund's future returns. In
          general, the greater the volume of buying and selling by the
          fund, the greater the impact that brokerage  commissions and
          other transaction costs will have on its return. The average
          turnover rate for all domestic stock funds is  approximately
          80%.

INVESTMENT POLICIES

Besides investing in common stocks of growth companies, the Portfolio may follow
a number of other investment policies to achieve its objectives.

   The  Portfolio  may invest up to 20% of its assets in securities of companies
based outside the United States.  These  securities may be traded in either U.S.
or foreign markets.


   Because of its investments in foreign securities, the Portfolio is subject to
foreign market risk. Investments in foreign stock markets can be as volatile, if
not more volatile,  than investments in U.S. stock markets.  Over the years, the
prices of  foreign  stocks  and the prices of U.S.  stocks  have often  moved in
opposite directions.  However, a portfolio that invests in both U.S. and foreign
stocks  may  benefit  from  diversification  and  have  less  volatility  than a
portfolio made up strictly of foreign stocks.


                           PLAIN TALK ABOUT

                             THE RISKS OF
                       INTERNATIONAL INVESTING

          Because foreign stock markets operate  differently  from the
          U.S. market, Americans investing abroad will encounter risks
          not typically associated with U.S. companies.  For instance,
          foreign  companies  are not subject to the same  accounting,
          auditing, and financial reporting standards and practices as
          U.S. companies;  and their stock may not be as liquid as the
          stock of similar U.S. companies. In addition,  foreign stock
          exchanges,   brokers,  and  companies  generally  have  less
          government    supervision    and   regulation   than   their
          counterparts  in the United  States.  These  factors,  among
          others,   could  negatively  impact  the  returns  Americans
          receive from a foreign investment. For more information, see
          the Portfolio's Statement of Additional Information.

                                       7

<PAGE>


   In addition,  the Portfolio is subject to country and currency risk.  Country
risk is the  possibility  that  political  events  (such  as a  war),  financial
problems  (such  as  government  default),  or  natural  disasters  (such  as an
earthquake)  will  weaken a  country's  economy  and cause  investments  in that
country to lose money.  Currency risk is the possibility  that a "stronger" U.S.
dollar will reduce returns for Americans investing overseas. Generally, when the
dollar  rises in value  against  a foreign  currency,  your  investment  in that
country  loses value  because its currency is worth fewer U.S.  dollars.  On the
other  hand,  a "weaker"  U.S.  dollar  generally  leads to higher  returns  for
Americans holding foreign investments.


   The Portfolio may also invest in derivatives.

   [FLAG] ALTHOUGH IT HAS NOT DONE SO IN THE PAST,  THE  PORTFOLIO  RESERVES THE
          RIGHT TO INVEST,  TO A LIMITED  EXTENT,  IN STOCK  FUTURES AND OPTIONS
          CONTRACTS, WHICH ARE TRADITIONAL TYPES OF DERIVATIVES.

                           PLAIN TALK ABOUT

                             DERIVATIVES

          A derivative is a financial contract whose value is based on
          (or "derived" from) a traditional  security (such as a stock
          or a bond),  an asset (such as a commodity like gold),  or a
          market  index  (such  as the S&P  500  Index).  Futures  and
          options are derivatives  that have been trading on regulated
          exchanges  for more than two  decades.  These  "traditional"
          derivatives  are  standardized  contracts that can easily be
          bought and sold,  and whose market values are determined and
          published   daily.   It  is   these   characteristics   that
          differentiate  futures and options from the  relatively  new
          types  of  derivatives.   If  used  for  speculation  or  as
          leveraged  investments,  derivatives can carry  considerable
          risks.


   Losses (or gains)  involving  futures can sometimes be  substantial--in  part
because a relatively small price movement in a futures contract may result in an
immediate and  substantial  loss (or gain) for a portfolio.  This Portfolio will
not use futures and options for speculative purposes or as leveraged investments
that magnify the gains or losses of an  investment.  Rather,  the Portfolio will
keep separate cash reserves or other liquid  portfolio  securities in the amount
of the  obligation  underlying the futures or options  contract.  Only a limited
percentage of the  Portfolio's  assets--5%--may  be applied  toward the deposits
required on futures  contracts,  and the value of all futures contracts in which
the Portfolio  acquires an interest cannot exceed 20% of the  Portfolio's  total
assets.

   The reasons for which the Portfolio will invest in futures and options are:

   o  To keep cash on hand to meet shareholder  redemptions or other needs while
      simulating full investment in stocks.

   o  To  reduce  the  Portfolio's  transaction  costs or add value  when  these
      instruments are favorably priced.


   The Portfolio will usually hold only a small percentage of its assets in cash
reserves,  although if the investment  adviser  believes that market  conditions
warrant a temporary  defensive  measure,  the  Portfolio  may hold cash reserves
without limit.

INVESTMENT LIMITATIONS


The Portfolio has adopted limitations on some of its investment  policies.  Some
of these limitations are that the Portfolio will not:


   o  Invest more than 25% of its assets in any one industry.

                                       8

<PAGE>

   o  Borrow money,  except for temporary or emergency purposes in an amount not
      exceeding  10% of its net assets.  Whenever  the  Portfolio's  outstanding
      borrowing is more than 5% of its assets, it will stop making investments.

   With respect to 75% of its assets, this Portfolio will not:

   o  Invest more than 5% of its assets in the securities of any one company.

   o  Buy more than 10% of the outstanding voting securities of any company.


   A complete list of the Portfolio's investment limitations can be found in the
Statement of Additional  Information.  These limitations are fundamental and may
be changed only by approval of a majority of the Portfolio's shareholders.


INVESTMENT PERFORMANCE

Vanguard/Trustees'  Equity  Fund-U.S.  Portfolio  invests  primarily  in  common
stocks,  so its  performance  is closely  correlated to the  performance  of the
overall  stock  market.   Historically,   stock  market   performance  has  been
characterized by sharp  up-and-down  swings in the short term and by more stable
growth over the long term.

                          AVERAGE ANNUAL TOTAL RETURNS
                       FOR YEARS ENDED DECEMBER 31, 1997

<TABLE>

<CAPTION>
<S>                           <C>       <C>       <C> 

                              1 YEAR    5 YEARS   10 YEARS
U.S. Portfolio                 29.5%     18.7%      15.6%
S & P 500 Index                33.4%     20.3%      18.1%
</TABLE>



   The results  shown above  represent  the  Portfolio's  "average  annual total
return"  performance,  which assumes that any distributions of capital gains and
dividends  were  reinvested  for  the  indicated   periods.   Also  included  is
comparative  information on the unmanaged S&P 500 Index. The chart does not make
any allowance for federal,  state, or local income taxes that  shareholders must
pay on a current basis.

   In weighing these performance figures,  note that the U.S. Portfolio has been
in operation  since January 31, 1980, and managed by Geewax,  Terker since April
1, 1992.

                           PLAIN TALK ABOUT

                           PAST PERFORMANCE

          Whenever you see information on a fund's performance, do not
          consider the figures to be an indication of the  performance
          you could expect by making an  investment in the fund today.
          The past is an imperfect  guide to the future;  history does
          not repeat itself in neat, predictable patterns.

                                       9

<PAGE>

SHARE PRICE

The Portfolio's  share price,  called its net asset value, or NAV, is calculated
each  business  day after the close of trading  on the New York Stock  Exchange,
generally 4 p.m. Eastern time. Net asset value per share is calculated by adding
up the total assets of the Portfolio,  subtracting  all of its  liabilities,  or
debts,   and  then   dividing   by  the  total   number  of   Portfolio   shares
outstanding:

                               TOTAL ASSETS   -   LIABILITIES
         NET ASSET VALUE =    --------------------------------
                               NUMBER OF SHARES OUTSTANDING

   The daily net asset value is useful to you as a shareholder  because the NAV,
multiplied  by the  number of  Portfolio  shares  you own,  gives you the dollar
amount  you would  have  received  had you sold all of your  shares  back to the
Portfolio that day.

   The Portfolio's share price can be found daily in the mutual fund listings of
most major newspapers under the heading "Vanguard  Funds." Different  newspapers
use different  abbreviations  of the  Portfolio's  name,  but the most common is
TRUS.

DIVIDENDS, CAPITAL GAINS, AND TAXES


Each June and December,  the Portfolio distributes to shareholders virtually all
of its income from interest and  dividends.  Any capital gains realized from the
sale of securities are distributed in December.  In addition,  the Portfolio may
occasionally  be  required  to  make  supplemental  dividend  or  capital  gains
distributions at other times during the year.


   If  you  own  shares  of  the  Portfolio  as  an  investment   option  in  an
employer-sponsored  retirement or savings plan, these dividend and capital gains
distributions  will be reinvested in additional  Portfolio shares and accumulate
on a tax-deferred basis. You will not owe taxes on these distributions until you
begin  withdrawals.  You should  consult  your plan  administrator,  your plan's
Summary Plan  Document,  or your tax adviser  about the tax  consequences  of an
investment in the Portfolio and of any plan withdrawals.

   If your Vanguard/Trustees' Equity Fund-U.S.  Portfolio investment is not part
of an  employer-sponsored  plan,  you can  receive  distributions  of  income or
capital  gains in cash,  or you may have  them  automatically  invested  in more
shares of the Portfolio. Both dividend and capital gains  distributions--whether
received in cash or invested in additional  shares--are  subject to federal (and
possibly  state and local)  income  taxes,  no matter how long you have held the
shares in the  Portfolio.  You should  consult your tax adviser  about other tax
consequences of an investment in the Portfolio.

                           PLAIN TALK ABOUT

                            DISTRIBUTIONS

          As a  shareholder,  you are  entitled  to your  share of the
          fund's  income from interest and  dividends,  and gains from
          the sale of investments. You receive such earnings as either
          income  dividends  or capital  gains  distributions.  Income
          dividends  come from the dividends  that the fund earns from
          its holdings as well as interest it receives  from its money
          market  and bond  investments.  Capital  gains are  realized
          whenever the fund sells securities for higher prices than it
          paid for them. These capital gains are either  short-term or
          long-term  depending on whether the fund held the securities
          for less than or more than one year.

                                       10

<PAGE>

The Portfolio and Vanguard


The U.S. Portfolio of Vanguard/Trustees' Equity Fund is a member of The Vanguard
Group, a family of more than 30 investment  companies with more than 95 distinct
investment portfolios and total net assets of more than $360 billion. All of the
Vanguard funds share in the expenses associated with business  operations,  such
as personnel, office space, equipment, and advertising.


   Vanguard also provides marketing services to the funds. Although shareholders
do not pay  sales  commissions  or 12b-1  marketing  fees,  each  fund  pays its
allocated share of The Vanguard Group's costs.

   A list of the Fund's Trustees and officers,  and their present  positions and
principal  occupations during the past five years, can be found in the Statement
of Additional Information.

                           PLAIN TALK ABOUT

                VANGUARD'S UNIQUE CORPORATE STRUCTURE

          The Vanguard  Group,  Inc.,  is the only MUTUAL  mutual fund
          company. It is owned jointly by the funds it oversees and by
          the  shareholders  in those  funds.  Other  mutual funds are
          operated  by  for-profit  management  companies  that may be
          owned  by one  person,  by a  group  of  individuals,  or by
          investors  who  bought  the  management  company's  publicly
          traded stock.  Because of its structure,  Vanguard  operates
          its funds at cost.  Instead  of  distributing  profits  from
          operations  to  a  separate  management  company,   Vanguard
          returns  profits to fund  shareholders  in the form of lower
          operating expenses.

INVESTMENT ADVISER

The Portfolio  employs Geewax,  Terker & Company  ("Geewax,  Terker"),  99 Starr
Street,  Phoenixville,  PA 19460,  as its  investment  adviser.  Geewax,  Terker
manages the Portfolio subject to the control of the Trustees and officers of the
Fund.

   Geewax, Terker is paid an advisory fee at the end of each fiscal quarter. The
fee is based on the Portfolio's average month-end net assets during the quarter,
multiplied by an annual percentage rate of 0.40%.

   The advisory fee may be increased or decreased by an  incentive/  penalty fee
based on the difference between the Portfolio's cumulative 36-month total return
performance and that of the S&P 500 Index.


   For the year ended  December  31,  1997,  the  advisory  fee  represented  an
effective  annual  basic  rate of 0.40% of the  Portfolio's  average  net assets
before a decrease of 0.18% based on performance.


   The  agreement  authorizes  Geewax,  Terker to choose  brokers  or dealers to
handle the purchase and sale of the Portfolio's securities,  and directs Geewax,
Terker to get the best available  price and most favorable  execution from these
brokers with respect to all transactions.  At times,  Geewax,  Terker may choose
brokers  who charge  higher  commissions  in the  interest of  obtaining  better
execution  of a  transaction.  If more  than  one  broker  can  obtain  the best
available price and favorable execution of a transaction, then Geewax, Terker is
authorized  to choose a broker who, in addition to  executing  the  transaction,
will provide  research  services to Geewax,  Terker or the  Portfolio.  However,
Geewax,  Terker will not pay higher commissions  specifically for the purpose of
obtaining  research services.  The Portfolio may direct Geewax,  Terker to use a
particular broker for certain transactions in exchange for commission rebates or
research services provided to the Portfolio.

                           PLAIN TALK ABOUT

                       THE PORTFOLIO'S ADVISER


          Geewax,  Terker  &  Company,  an  investment  advisory  firm
          founded  in 1982,  currently  manages  about $3  billion  in
          assets for  institutional  endowment and pension funds.  The
          manager  responsible  for overseeing the  implementation  of
          Geewax,  Terker's  strategy  for  Vanguard/Trustees'  Equity
          Fund-U.S. Portfolio is:

             JOHN J.  GEEWAX,  Partner and Founder,  Geewax,  Terker &
          Company;  has worked in  investment  management  since 1980;
          B.S.,  M.B.A.,  and J.D.,  University of  Pennsylvania.  Mr.
          Geewax  has served in this  capacity  since  Geewax,  Terker
          became the Portfolio's adviser in April 1992.

             Mr.  Geewax has  served in this  capacity  since  Geewax,
          Terker became the Portfolio's adviser in April 1992.


                                       11

<PAGE>

   The Fund's Board of Trustees may,  without prior approval from  shareholders,
change the terms of the  advisory  agreement or hire a new  investment  adviser,
either as a replacement for Geewax, Terker or as an additional adviser. However,
no such change would be made before  giving  shareholders  30 days'  notice,  in
writing.

GENERAL INFORMATION

The U.S. Portfolio is one of two Portfolios of Vanguard/Trustees' Equity Fund, a
Pennsylvania business trust. The other Portfolio is Vanguard International Value
Portfolio.   The   Portfolios   are  combined   under  one  business  trust  for
administrative  purposes,  but in virtually  all respects  operate like separate
business trusts.

   Shareholders  of the U.S.  Portfolio  have rights and  privileges  similar to
those enjoyed by corporate  and trust  shareholders.  For example,  shareholders
will not be responsible  for any liabilities of the trust. If any matters are to
be  voted on by  shareholders  (such as a  change  in a  fundamental  investment
objective or the election of  Trustees),  each share  outstanding  at that point
would be entitled to one vote. Annual meetings will not be held by the Portfolio
except as required by the  Investment  Company  Act of 1940.  A meeting  will be
scheduled  to vote on the removal of a Trustee if the holders of at least 10% of
the Fund's shares request a meeting in writing.

"Standard & Poor's 500," "S&P  500(R),"  "Standard &  Poor's(R),"  "S&P(R)," and
"500" are trademarks of The McGraw-Hill Companies, Inc.

                                       12

<PAGE>

INVESTING WITH VANGUARD

FOR PLAN PARTICIPANTS

Vanguard/Trustees'  Equity Fund-U.S.  Portfolio is an investment  option in your
retirement or savings plan. Your plan  administrator  or your employee  benefits
office can provide you with detailed  information  on how to participate in your
plan and how to elect the Portfolio as an investment option.


   o  If you have any questions  about the Portfolio or Vanguard,  including the
      Portfolio's investment objectives,  strategy, or risks, contact Vanguard's
      Participant Services Center, toll-free, at 1-800-523-1188.


   o  If you have questions about your account,  contact your plan administrator
      or the organization that provides recordkeeping services for your plan.

INVESTMENT OPTIONS AND ALLOCATIONS

Your  plan's  specific  provisions  may  allow  you to  change  your  investment
selections,  the amount of your  contributions,  or how your  contributions  are
allocated  among the  investment  choices  available  to you.  Contact your plan
administrator or employee benefits office for more details.

TRANSACTIONS

Contributions, exchanges, or redemptions of the Portfolio's shares are processed
as soon as they have been  received by Vanguard in good order.  Good order means
that your request includes complete information on your contribution,  exchange,
or redemption, and that Vanguard has received the appropriate assets.

EXCHANGES


The exchange  privilege (your ability to redeem shares from one fund to purchase
shares of another  fund) may be available to you through your plan.  Although we
make every  effort to maintain  the exchange  privilege,  Vanguard  reserves the
right to revise or  terminate  the  exchange  privilege,  limit the amount of an
exchange, or reject any exchange, at any time, without notice. Because excessive
exchanges can  potentially  disrupt the management of the Portfolio and increase
its transaction  costs,  Vanguard  limits  exchange  activity to TWO SUBSTANTIVE
EXCHANGE  REDEMPTIONS  (at least 30 days  apart) from the  Portfolio  during any
12-month  period.  "Substantive"  means  either a dollar  amount  or a series of
movements  between  Vanguard  funds  that  Vanguard  determines,   in  its  sole
discretion,  could have an adverse impact on the management of the Portfolio. In
addition,  certain  investment  options,  particularly  funds made up of company
stock or investment  contracts,  may be subject to unique restrictions.  Contact
your plan  administrator for details on the exchange policies that apply to your
plan.

   Before making an exchange, you should consider the following:

   o  Before you exchange to another  Vanguard fund  available in your plan, you
      should  read  that  fund's  prospectus.   Contact  Vanguard's  Participant
      Services Center, toll-free, at 1-800-523-1188 for a copy.

   o  Vanguard can accept  exchanges  only as permitted by your plan.  Your plan
      administrator can explain how frequently exchanges are allowed.


FOR OTHER INSTITUTIONAL INVESTORS

If you have  questions  about  Vanguard/Trustees'  Equity  Fund-U.S.  Portfolio,
including  how  to  establish  an  account,   call   Vanguard,   toll-free,   at
1-800-523-1036.

   If you have  questions  about an  existing  account,  contact  your  Vanguard
account administrator.

                                       13

<PAGE>

INVESTING WITH VANGUARD (continued)

TRANSACTIONS


Purchases,  exchanges, or redemptions of the Portfolio's shares are processed as
soon as they have been received by Vanguard in good order. Good order means that
your request  includes  complete  information  on your  purchase,  exchange,  or
redemption,  and that Vanguard has received the appropriate assets. The price of
shares bought,  exchanged,  or sold will be the Fund's next-determined net asset
value after Vanguard has processed your request,  provided your request has been
received before the close of trading on the New York Stock Exchange (generally 4
p.m. Eastern time).


   Vanguard must consider the  interests of all  Portfolio  shareholders  and so
reserves the right to:

   o  Delay or reject any  purchase  or  exchange  request  that may disrupt the
      Portfolio's operation or performance.

   o  Revise or  terminate  the  exchange  privilege  or limit the  amount of an
      exchange, at any time, without notice.

   o  Take up to seven days to deliver your redemption proceeds.

   o  Pay redemption  proceeds--in  whole or in  part--through a distribution in
      kind of readily marketable securities.

ACCESSING FUND INFORMATION BY COMPUTER


VANGUARD ONLINE(R)
www.vanguard.com

Use your personal  computer to learn more about  Vanguard's  funds and services;
keep in touch  with  your  Vanguard  accounts;  map out a  long-term  investment
strategy;  initiate certain transactions;  and ask questions,  make suggestions,
and send messages to Vanguard.

Our  education-oriented  website  provides  timely  news and  information  about
Vanguard's funds and services;  an online  "university" that offers a variety of
mutual fund classes; and easy-to-use,  interactive tools to help you create your
own investment and retirement strategies.


                                       14

<PAGE>

PROSPECTUS POSTSCRIPT

This  prospectus  is designed to provide you with  pertinent  information  about
Vanguard/Trustees'   Equity  Fund-U.S.   Portfolio,   including  its  investment
objectives,  risks, strategy, and expenses, as well as services available to you
as a shareholder.

   It is  important  that you  understand  these  facts  so that you can  decide
whether an investment in the Portfolio is right for you. The following questions
offer a quick review of some of the subjects covered by this prospectus.

IN READING THE PROSPECTUS, DID YOU LEARN:

   o  The Portfolio's objectives? (page 4)

   o  The Portfolio's investment strategy? (page 5)

   o  Who should invest in the Portfolio? (page 4)

   o  The risks associated with the Portfolio? (pages 4-8)

   o  Whether the Portfolio is federally insured? (inside front cover)

   o  The Portfolio's expenses? (page 2)

   o  The background of the Portfolio's investment manager? (page 11)

                           PLAIN TALK ABOUT

                       KEEPING YOUR PROSPECTUS

          Reading  this   prospectus  will  help  you  decide  whether
          Vanguard/Trustees'  Equity Fund--U.S.  Portfolio is suitable
          for your investment  goals.  If you decide to invest,  don't
          throw  the  prospectus  out;  you will no doubt  need it for
          future reference.

                                       15

<PAGE>

AN INVESTMENT PRIMER

Whether you are investing for the short or long term, keep these three points in
mind:

1. INVEST IN ALL THREE OF THE MAJOR ASSET CLASSES.

Most people use a combination of . . .

   o  Stocks,  which are  considered  the "riskiest" of the three asset classes.
      Day to day, or even year to year,  stocks tend to have wide price  swings.
      Despite this potential for significant price fluctuation,  however, stocks
      have  historically  offered  higher  returns  than the other  major  asset
      classes over longer periods.

   o  Bonds,  which are chiefly  influenced by changes in interest  rates.  When
      interest rates climb,  bond prices drop;  when interest  rates fall,  bond
      prices rise.

   o  Cash reserves,  which offer more  share-price (or capital)  stability than
      stocks or  bonds--but  also  generate  lower  returns.  Some  examples are
      Treasury bills and money market funds.

2. REMEMBER THAT SAFETY HAS A PRICE.

Many people want a "no-risk" investment.  Remember, though, that the more safety
you seek, the less potential  reward you can expect--and the less you can expect
in returns  after  inflation.  Inflation  affects not only the price you pay for
goods and services; it also eats away at your investment returns over time. What
is left is known as your "real"  return--the actual return you receive after you
factor in inflation (see the chart at left).

3. CHANCES ARE GOOD THAT YOU CAN AFFORD TO TAKE MORE RISK.

As the chart shows,  inflation cuts into the returns of all three asset classes.
However,  stocks and bonds have had an easier time of outpacing  inflation  over
time--which  means  that,  to beat  inflation,  you  may  need  to  invest  more
aggressively.

   Don't be put off by  potential  downswings  in the value of your  investment,
especially if you are investing for long periods. Time acts as a shock absorber,
letting you ride out the short-term  bumps that investments  often provide.  The
longer  you hold an  investment,  the  more  likely  it is that you will  earn a
positive return.

                           PLAIN TALK ABOUT

                    INFLATION AND YOUR INVESTMENTS

          No matter how you invest your money,  inflation--the  rising
          cost of  living--is  a  constant  threat to your  investment
          returns.  The chart below shows how stocks,  bonds, and cash
          reserves have fared against inflation over time.

                             INFLATION'S EFFECT ON
                               INVESTMENT RETURNS
                                  (1926-1997)

                                    [CHART]

Source:  [COPYRIGHT]  Stocks,  Bonds,  Bills,  and Inflation 1998  Yearbook(TM),
Ibbotson Associates, Chicago (annually updates work by Roger G. Ibbotson and Rex
A. Sinquefield). Used with permission. All rights reserved.

                                       16

<PAGE>

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION

Payment  to  mutual  fund  shareholders  of gains  realized  during  the year on
securities that the fund has sold at a profit, minus any realized losses.

Cash Reserves

Cash deposits as well as short-term  bank  deposits,  money market  instruments,
U.S. Treasury bills, bank certificates of deposit (CDs),  repurchase agreements,
commercial paper, and banker's acceptances.

COMMON STOCK

A security  representing  ownership  rights in a  corporation.  A stockholder is
entitled  to share in the  company's  profits,  some of which may be paid out as
dividends.

DIVIDEND INCOME

Payment to  shareholders  of income from  interest or  dividends  generated by a
fund's investments.

DOLLAR-COST AVERAGING

Investing equal amounts of money at regular  intervals on an ongoing basis. This
technique  ensures  that an investor  buys fewer shares when prices are high and
more shares when prices are low.

EXPENSE RATIO

The  percentage  of a fund's  average net assets used to pay its  expenses.  The
expense ratio  includes  management  fees,  administrative  fees,  and any 12b-1
marketing fees.

FIXED-INCOME SECURITIES

Investments,  such as bonds, that have a fixed payment schedule. While the level
of income  offered  by these  securities  is  predetermined,  their  prices  may
fluctuate.

GROWTH AND INCOME STOCK FUND

A mutual fund that  emphasizes  stocks of  companies  that are believed to offer
growth potential as well as market or above-average dividend income.

GROWTH STOCK FUND

A mutual fund that seeks moderate capital  appreciation and some dividend income
by investing primarily in stocks.

INVESTMENT ADVISER

An  organization  that makes the  day-to-day  decisions  regarding a portfolio's
investments.

MUTUAL FUND

An  investment  company  that pools the money of many people and invests it in a
variety of securities in an effort to achieve a specific objective over time.

NET ASSET VALUE (NAV)

The market value of a mutual fund's total assets, minus liabilities,  divided by
the  number of shares  outstanding.  The value of a single  share is called  its
share value or share price.

PORTFOLIO DIVERSIFICATION

Holding a variety of securities so that a portfolio's  return is not hurt by the
poor performance of a single security or industry.

PRICE/EARNINGS (P/E) RATIO

The current share price of a stock,  divided by its per-share earnings (profits)
from the past year. A stock selling for $20, with earnings of $2 per share,  has
a price/earnings ratio of 10.

PRINCIPAL

The amount of your own money you put into an investment.

SECURITIES

Stocks, bonds, and other investment vehicles.

TOTAL RETURN

A percentage change,  over a specified time period, in a mutual fund's net asset
value,  with the ending net asset value adjusted to account for the reinvestment
of all distributions of dividends and capital gains.

VALUE STOCK FUND

A mutual fund that focuses on the stocks of companies  that,  considering  their
earnings and dividends,  are  attractively  priced;  these  companies  often pay
regular dividend income to shareholders.

VOLATILITY

The  fluctuations  in value of a mutual  fund or other  security.  The greater a
fund's volatility, the wider the fluctuations between its high and low prices.

YIELD

Current income (interest or dividends)  earned by an investment,  expressed as a
percentage of the investment's price.

<PAGE>

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FOR PARTICIPANTS IN
EMPLOYER-SPONSORED PLANS


PARTICIPANT SERVICES CENTER
1-800-523-1188
TEXT TELEPHONE:
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For information on Vanguard funds and services

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www.vanguard.com

E-mail
[email protected]

[COPYRIGHT] 1998 Vanguard Marketing
Corporation, Distributor

I025N
<PAGE>


VANGUARD
INTERNATIONAL VALUE
PORTFOLIO
Prospectus
April 30, 1998

A Portfolio of Vanguard/ Trustees' Equity Fund

This prospectus contains financial data for the Portfolio through the
fiscal year ended December 31, 1997.


Formerly known as Vanguard/Trustees' Equity Fund--International Portfolio

[VANGUARD LOGO]

<PAGE>

VANGUARD INTERNATIONAL VALUE PORTFOLIO      An International Stock Mutual Fund

CONTENTS
Portfolio  Profile                                           1
Portfolio Expenses                                           2
Financial Highlights                                         3
A Word About Risk                                            4
The Portfolio's Objectives                                   4
Who Should Invest                                            4
Investment Strategy                                          5
Investment Policies                                          7
Investment Limitations                                       9
Investment Performance                                       9
Share Price                                                 10
Dividends, Capital Gains, and Taxes                         10
The Portfolio and Vanguard                                  11
Investment Adviser                                          11
General Information                                         12
Investing with Vanguard
o        For Plan Participants                              13
o        For Other
Institutional Investors                                     13
Accessing Fund Information by Computer                      14
Prospectus Postscript                                       15
Investment Primer                                           16
Glossary                                     Inside Back Cover

INVESTMENT OBJECTIVES AND POLICIES

Vanguard International Value Portfolio (the "Portfolio") is a diversified mutual
fund,  a part of  Vanguard/Trustees'  Equity  Fund  (the  "Fund"),  an  open-end
investment  company.  Prior  to April  30,  1997,  the  Portfolio  was  known as
Vanguard/Trustees' Equity Fund--International Portfolio.

   The  Portfolio  seeks to provide  long-term  growth  and income by  investing
primarily in the stocks of large and medium-size  companies  located outside the
United States.  The Portfolio uses a "value"  investment  approach,  emphasizing
companies   that--considering   their   histories   and   compared   to  similar
companies--are attractively priced. These companies tend to be out of favor with
investors.

   IT IS IMPORTANT TO NOTE THAT THE  PORTFOLIO'S  SHARES ARE NOT  GUARANTEED  OR
INSURED  BY THE FDIC OR ANY  OTHER  AGENCY  OF THE U.S.  GOVERNMENT  OR  FOREIGN
GOVERNMENTS.  AS WITH ANY INVESTMENT IN COMMON STOCKS, WHICH ARE SUBJECT TO WIDE
FLUCTUATIONS  IN  MARKET  VALUE,  YOU  COULD  LOSE  MONEY  BY  INVESTING  IN THE
PORTFOLIO.

FEES AND EXPENSES

The Portfolio is offered on a no-load  basis,  which means that you pay no sales
commissions  or 12b-1  marketing  fees.  You will,  however,  incur expenses for
investment  advisory,  management,  administrative,  and distribution  services,
which are included in the expense ratio.

ADDITIONAL INFORMATION ABOUT THE PORTFOLIO


A Statement of Additional  Information  (dated April 30, 1998)  containing  more
information  about the Portfolio is, by reference,  part of this  prospectus and
may be obtained  without  charge by  contacting  Vanguard  (see back cover),  or
visiting the Securities and Exchange Commission's website (www.sec.gov).


WHY READING THIS PROSPECTUS IS IMPORTANT

This  prospectus  explains  the  objectives,  risks,  and  strategy  of Vanguard
International  Value  Portfolio.  To highlight  terms and concepts  important to
mutual fund investors, we have provided "Plain Talk" explanations along the way.
Reading the  prospectus  will help you to decide  whether the  Portfolio  is the
right investment for you. We suggest that you keep it for future reference.

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION,  NOR HAS THE SECURITIES AND EXCHANGE COMMISSION PASSED UPON
THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY
IS A CRIMINAL OFFENSE.

<PAGE>

PORTFOLIO PROFILE                         Vanguard International Value Portfolio

WHO SHOULD INVEST (page 4)

   o  Investors seeking investment opportunities outside the United States.

   o  Investors  seeking  capital  growth and some income over the long term--at
      least five years.

   o  Investors   willing  to  accept  the  additional   risks  associated  with
      international investing.

WHO SHOULD NOT INVEST

   o  Investors seeking significant current income.

   o  Investors unwilling to accept significant fluctuations in share price.

RISKS OF THE PORTFOLIO (pages 4--8)

The Portfolio's  total return will fluctuate within a wide range, so an investor
could lose money over short or even extended  periods.  In addition to the risks
of U.S.  stock funds  (market  risk,  etc.),  the  Portfolio is subject to risks
associated with foreign investing. Among these are country risk (the chance that
a country's  economy will be hurt by political or financial  problems or natural
disasters) and currency risk (the chance that Americans  investing  abroad could
lose money  because  of a rise in the value of the U.S.  dollar  versus  foreign
currencies).

DIVIDENDS AND CAPITAL GAINS (page 10)

Paid annually in December.

INVESTMENT ADVISER (page 11)

UBS International Investment London Limited, London, England.

INCEPTION DATE: May 16, 1983


NET ASSETS AS OF 12/31/1997: $777 million

PORTFOLIO'S EXPENSE RATIO FOR THE YEAR ENDED 12/31/1997: 0.49%


LOADS, 12B-1 MARKETING FEES: None

SUITABLE FOR IRAS: Yes

MINIMUM INITIAL INVESTMENT:  $3,000;  $1,000 for IRAs and custodial accounts for
minors

NEWSPAPER ABBREVIATION: IntlVal

VANGUARD FUND NUMBER: 046

CUSIP NUMBER: 921939203

QUOTRON SYMBOL: VTRIX.Q

ACCOUNT FEATURES (page 14)

   o  Telephone Redemption

   o  Vanguard Direct Deposit Service(TM)

   o  Vanguard Automatic Exchange Service(SM)

   o  Vanguard Fund Express(R)

   o  Vanguard Dividend Express(SM)



AVERAGE ANNUAL TOTAL RETURNS--YEARS ENDED DECEMBER 31, 1997
<TABLE>
<CAPTION>
<S>                                <C>     <C>       <C>   

                                   1 YEAR   5 YEARS  10 YEARS
                                   --------------------------
Vanguard International Value
   Portfolio*                      --4.6%     9.6%     7.6%
MSCI EAFE Index                      2.1     11.7      6.6

</TABLE>


QUARTERLY RETURNS (%) 1988--1997 (intended to show volatility of returns)

                                    [CHART]

IN EVALUATING  PAST  PERFORMANCE,  REMEMBER THAT IT IS NOT  INDICATIVE OF FUTURE
PERFORMANCE.  PERFORMANCE  FIGURES INCLUDE THE  REINVESTMENT OF ANY DIVIDEND AND
CAPITAL GAINS DISTRIBUTIONS.  THE RETURNS SHOWN ARE NET OF EXPENSES, BUT THEY DO
NOT REFLECT INCOME TAXES AN INVESTOR WOULD HAVE INCURRED.  NOTE,  TOO, THAT BOTH
THE  RETURN  AND  PRINCIPAL  VALUE  OF AN  INVESTMENT  WILL  FLUCTUATE  SO  THAT
INVESTORS' SHARES, WHEN REDEEMED,  MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL
COST.

                                   1

<PAGE>

PORTFOLIO EXPENSES

The examples  below are designed to help you  understand  the various  costs you
would bear, directly or indirectly, as an investor in the Portfolio.

   As noted in this table,  you do not pay fees of any kind when you buy,  sell,
or exchange shares of the Portfolio:

SHAREHOLDER TRANSACTION EXPENSES
Sales Load Imposed on Purchases:                 None
Sales Load Imposed on Reinvested Dividends:      None
Redemption Fees:                                 None
Exchange Fees:                                   None


   The next table  illustrates the operating  expenses that you would incur as a
shareholder of the Portfolio.  These expenses are deducted from the  Portfolio's
income before it is paid to you.  Expenses include  investment  advisory fees as
well  as  the  costs  of  maintaining  accounts,  administering  the  Portfolio,
providing shareholder services, and other activities.  The expenses shown in the
table are based upon those incurred in the fiscal year ended December 31, 1997.


                           PLAIN TALK ABOUT

                        THE COSTS OF INVESTING

          Costs are an  important  consideration  in choosing a mutual
          fund. That's because you, as a shareholder, pay the costs of
          operating a fund plus any transaction  costs associated with
          buying, selling, or exchanging shares. These costs can erode
          a  substantial  portion  of  the  gross  income  or  capital
          appreciation   a  fund  achieves.   Even   seemingly   small
          differences in fund expenses can, over time, have a dramatic
          impact on a fund's performance.
<TABLE>
<CAPTION>

ANNUAL PORTFOLIO OPERATING EXPENSES
<S>                                                      <C>    <C>
Management and Administrative Expenses:                         0.26%
Investment Advisory Expenses:                                   0.15%
12b-1 Marketing Fees:                                            None
Other Expenses
         Marketing and Distribution Costs:                0.02%
         Miscellaneous Expenses (e.g., Taxes, Auditing):  0.06%
                                                          ----
Total Other Expenses:                                           0.08%
                                                                ----
         TOTAL OPERATING EXPENSES (EXPENSE RATIO):              0.49%
                                                                ====

</TABLE>

   The  following  example is intended to help you compare the cost of investing
in the  Portfolio  with  the  cost  of  investing  in  other  mutual  funds,  by
illustrating  the  hypothetical  expenses  that  you  would  incur  on a  $1,000
investment  over various  periods.  The example  assumes that (1) the  Portfolio
provides a return of 5% a year and (2) you redeem your  investment at the end of
each period.

<TABLE>
<CAPTION>

          <S>      <C>      <C>     <C>

         -----------------------------------
         1 YEAR   3 YEARS  5 YEARS  10 YEARS
         -----------------------------------
           $5       $16      $27      $62
         -----------------------------------

</TABLE>

THIS EXAMPLE  SHOULD NOT BE CONSIDERED A  REPRESENTATION  OF ACTUAL  EXPENSES OR
PERFORMANCE  FROM THE PAST OR FOR THE FUTURE,  WHICH MAY BE HIGHER OR LOWER THAN
THOSE SHOWN.

                           PLAIN TALK ABOUT

                            FUND EXPENSES


          All mutual funds have operating  expenses.  These  expenses,
          which are deducted from a fund's gross income, are expressed
          as a  percentage  of the net  assets of the  fund.  Vanguard
          International Value Portfolio's expense ratio in fiscal year
          1997 was 0.49%,  or $4.90 per $1,000 of average  net assets.
          The average  actively  managed  international  equity mutual
          fund had expenses in 1997 of 1.67%,  or $16.70 per $1,000 of
          average net assets, according to Lipper Analytical Services,
          which reports on the mutual fund industry.


                                   2

<PAGE>

FINANCIAL HIGHLIGHTS


The  following  financial  highlights  table  shows  the  results  for  a  share
outstanding  of the  Portfolio  for each of the fiscal years in the decade ended
December  31, 1997.  The  financial  statements  that  include  these  financial
highlights were audited by Price Waterhouse LLP,  independent  accountants.  You
should read this  information  in  conjunction  with the  Portfolio's  financial
statements and  accompanying  notes,  which appear,  along with the audit report
from Price  Waterhouse  LLP, in the  Portfolio's  most recent  annual  report to
shareholders. The annual report is incorporated by reference in the Statement of
Additional  Information  and in this  prospectus,  and contains a more  complete
discussion of the Portfolio's  performance.  You may have the report sent to you
without  charge by writing to Vanguard or by calling  our  Investor  Information
Department.


   From time to time,  the  Vanguard  funds  advertise  yield  and total  return
figures. Yield is a historical measure of dividend income, and total return is a
measure of past dividend  income  (assuming  that it has been  reinvested)  plus
realized and unrealized capital appreciation  (depreciation).  Neither yield nor
total return should be used to predict the future performance of a fund.
<TABLE>
<CAPTION>


                                                                               YEAR ENDED DECEMBER  31,
                                            ----------------------------------------------------------------------------------------
<S>                                         <C>      <C>      <C>      <C>      <C>      <C>      <C>       <C>     <C>      <C>
                                             1997     1996     1995     1994     1993     1992     1991      1990    1989    1988
NET ASSET VALUE, BEGINNING OF YEAR          $27.54   $31.11   $31.48   $31.04   $24.44  $27.78   $26.58     $32.44  $28.27  $28.66
                                            ----------------------------------------------------------------------------------------
INVESTMENT OPERATIONS
   Net Investment Income                      .690      .82      .75      .55      .50     .66      .78       1.02     .82     .77
   Net Realized and Unrealized
      Gain (Loss) on Investments            (1.945)    2.20    2.185     1.08     6.91    (3.05)   1.80      (4.92)   6.22     4.41
                                            ----------------------------------------------------------------------------------------
      TOTAL FROM INVESTMENT OPERATIONS      (1.255)    3.02    2.935     1.63     7.41    (2.39)   2.58      (3.90)   7.04     5.18
DISTRIBUTIONS
   Dividends from Net Investment Income      (.690)    (.82)    (.79)    (.56)    (.81)    (.67)   (.77)      (.95)   (.79)    (.99)
   Distributions from Realized
      Capital Gains                         (2.955)   (5.77)  (2.515)    (.63)    --      (.28)   (.61)     (1.01)  (2.08)   (4.58)
                                            ----------------------------------------------------------------------------------------
      TOTAL DISTRIBUTIONS                   (3.645)   (6.59)  (3.305)   (1.19)   (.81)    (.95)  (1.38)     (1.96)  (2.87)   (5.57)
- ------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR                $22.64   $27.54   $31.11   $31.48   $31.04  $24.44   $27.78     $26.58  $32.44  $28.27
====================================================================================================================================
TOTAL RETURN                                 -4.58%   10.22%    9.65%    5.25%   30.49%  -8.72%    9.96%    -12.26%  25.97%  18.78%
====================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Year (Millions)            $777     $917     $988   $1,053     $982    $678     $878       $796    $646     $467
Ratio of Total Expenses to
   Average Net Assets                         0.49%    0.50%    0.47%    0.34%    0.40%    0.42%   0.38%      0.44%   0.46%    0.51%
Ratio of Net Investment Income to
   Average Net Assets                         2.36%    2.50%    2.29%    1.71%    1.76%    2.48%   2.87%      3.62%   2.61%    2.55%
Portfolio Turnover Rate                         37%      82%      47%      40%      39%      51%     46%        18%     25%      14%
Average Commission Rate Paid                $.0147   $.0582       N/A      N/A      N/A      N/A     N/A        N/A     N/A      N/A
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                           PLAIN TALK ABOUT

              HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE


          The  Portfolio  (known  as the  International  Portfolio  of
          Vanguard/Trustees'  Equity Fund until April  30,1997)  began
          fiscal  1997 with a net asset  value  (price)  of $27.54 per
          share.  During the year,  the  Portfolio  earned  $0.690 per
          share from investment income (interest and dividends). There
          was  a  decline   of  $1.945  per  share  in  the  value  of
          investments  held or sold by the  Portfolio,  resulting in a
          net decline of $1.255 from  investment  operations.  In all,
          $3.645 per share was returned to shareholders in the form of
          distributions  ($0.690  in  dividends,   $2.955  in  capital
          gains).  This resulted in a share price of $22.64 at the end
          of the year,  a decrease of $4.90 per share (from  $27.54 at
          the beginning of the year to $22.64 at the end of the year).
          Assuming   that   the   shareholder   had   reinvested   the
          distribution  in the purchase of more  shares,  total return
          from the Portfolio was --4.58% for the year.

             As of December 31, 1997,  the  Portfolio had $777 million
          in net assets;  an expense  ratio of 0.49% ($4.90 per $1,000
          of net assets); and net investment income amounting to 2.36%
          of its average net assets.  It sold and replaced  securities
          valued at 37% of its total net assets.


                                   3

<PAGE>

A WORD ABOUT RISK

This  prospectus  describes  the risks you would face as an investor in Vanguard
International  Value Portfolio.  It is important to keep in mind one of the main
axioms of  investing:  The  higher  the risk of losing  money,  the  higher  the
potential reward. The reverse,  also, is generally true: The lower the risk, the
lower the potential reward.  However,  as you consider an investment in Vanguard
International  Value Portfolio,  you should also take into account your personal
tolerance for the daily fluctuations of the stock market.

   Look for this "warning flag" symbol [FLAG]  throughout the prospectus.  It is
used to mark  detailed  information  about  each  type of risk  that  you,  as a
shareholder of the Portfolio, would confront.

THE PORTFOLIO'S OBJECTIVES

Vanguard International Value Portfolio seeks to provide long-term capital growth
and income.  These objectives are  fundamental,  which means that they cannot be
changed unless a majority of shareholders vote to do so.

   [FLAG] BECAUSE OF THE SEVERAL TYPES OF RISK DESCRIBED ON THE FOLLOWING PAGES,
          YOUR  INVESTMENT IN THE  PORTFOLIO,  AS WITH ANY  INVESTMENT IN COMMON
          STOCKS, COULD LOSE MONEY.

                                PLAIN TALK ABOUT

                          Investing for the Long Term

          The  Portfolio  is  intended  to be a  long-term  investment
          vehicle  and is not  designed  to provide  investors  with a
          means of speculating on short-term fluctuations in the stock
          market.

WHO SHOULD INVEST

The Portfolio may be a suitable investment for you if:

   o  You are seeking investment opportunities outside the United States.

   o  You wish to add a value-oriented international stock fund to your existing
      holdings,  which  could  include  U.S.  stock,  bond,  money  market,  and
      tax-exempt investments.

   o  You are willing to accept the additional  risks  (country  risk,  currency
      risk, etc.) associated with international investments.

   o  You are seeking growth of capital over the long term--at least five years.

   This  Portfolio is not an appropriate  investment if you are a  market-timer.
Investors  who  engage  in  excessive   in-and-out   trading  activity  generate
additional  costs  that are  borne by all of the  Portfolio's  shareholders.  To
minimize such costs, which reduce the ultimate returns achieved by you and other
shareholders, the Portfolio has adopted the following policies:

   o  The Portfolio reserves the right to reject any purchase request--including
      exchanges from other Vanguard  funds--that it regards as disruptive to the
      efficient management of the Portfolio. This could be because of the timing
      of the  investment  or because of a history  of  excessive  trading by the
      investor.

                                       4

<PAGE>

   o  There is a limit on the  number of times you can  exchange  into or out of
      the  Portfolio  (see  "Redeeming  Shares" in the  INVESTING  WITH VANGUARD
      section).

   o  The Portfolio reserves the right to stop offering shares at any time.

INVESTMENT STRATEGY

This  section  explains  how the  investment  adviser  pursues  the  Portfolio's
objectives  of  long-term  growth and income.  It also  explains  several of the
risks--market  risk,  objective risk,  country risk,  manager risk, and currency
risk--faced by investors in the  Portfolio.  Unlike the  Portfolio's  investment
objectives,  the adviser's  investment  strategy is not  fundamental  and can be
changed by the  Portfolio's  Board of  Trustees  without  shareholder  approval.
However,  before making any important change in its policies, the Portfolio will
give shareholders 30 days' notice, in writing.

MARKET EXPOSURE

The Portfolio is a value-oriented  fund that invests  primarily in the stocks of
large and medium-size non-U.S.  companies. Under normal circumstances,  at least
65% of the  Portfolio's  assets will be  invested in foreign  stocks in at least
three different countries.

                           PLAIN TALK ABOUT

                       COSTS AND MARKET-TIMING

          Some investors try to profit from "market-timing"--switching
          money into  investments when they expect prices to rise, and
          taking  money out when they  expect the  market to fall.  As
          money is  shifted  in and out, a fund  incurs  expenses  for
          buying and selling securities.  These costs are borne by all
          fund shareholders,  including the long-term investors who do
          not generate the costs. Therefore, the Portfolio discourages
          short-term  trading by,  among other  things,  limiting  the
          number of exchanges it permits.

   [FLAG] THE PORTFOLIO IS SUBJECT TO MARKET RISK, WHICH IS THE POSSIBILITY THAT
          STOCK PRICES OVERALL WILL DECLINE OVER SHORT OR EVEN EXTENDED PERIODS.
          STOCK  MARKETS  TEND TO MOVE IN CYCLES,  WITH  PERIODS OF RISING STOCK
          PRICES AND PERIODS OF FALLING STOCK PRICES.  IN ADDITION,  INVESTMENTS
          IN FOREIGN STOCK MARKETS CAN BE AS RISKY, IF NOT MORE RISKY, THAN U.S.
          STOCK INVESTMENTS.

   To illustrate the  volatility of  international  stock prices,  the following
table shows the best,  worst,  and average total returns  (dividend  income plus
change in market  value) for  foreign  stock  markets  over  various  periods as
measured by the Morgan Stanley Capital  International Europe,  Australasia,  and
Far East (MSCI EAFE)  Index,  a widely used  barometer  of  international  stock
market activity.  Note that the returns shown do not include the costs of buying
and selling  stocks or other  expenses  that a real-world  investment  portfolio
would incur. Note, also, how the gap between best and worst tends to narrow over
the long term.

<TABLE>
<CAPTION>

                 INTERNATIONAL STOCK MARKET RETURNS (1969--1997)
- --------------------------------------------------------------------------------
<S>                                         <C>      <C>      <C>      <C>
                                            1 YEAR   5 YEARS  10 YEARS 20 YEARS
- --------------------------------------------------------------------------------
Best                                         69.9%    36.5%    22.8%    16.3%
Worst                                       -23.2      1.5      6.6     12.0
Average                                      14.5     13.8     15.3     14.9
- --------------------------------------------------------------------------------
</TABLE>

                                       5

<PAGE>


   The table  covers all of the 1-,  5-,  10-,  and  20-year  periods  from 1969
through 1997.  Keep in mind that this was a  particularly  favorable  period for
foreign markets. For instance, over 10-year periods,  foreign stocks provided an
average return of 15.3%,  compared to 13.4% for U.S.  stocks (as measured by the
Standard & Poor's 500  Composite  Stock Price Index) during the same time frame.
These average returns reflect past  performance and should not be regarded as an
indication  of future  returns  from either  foreign  markets as a whole or this
Portfolio in particular.


   Note,  too,  that,  while  the  Portfolio  emphasizes  stocks  of  large  and
medium-size  companies,  it also includes stocks of small  companies.  Stocks of
small  companies have  historically  been more volatile  than--and at times have
performed quite differently from--the stocks of larger companies.  Keep in mind,
too,  that  classifications  of companies as large,  medium,  or small vary from
country to  country.  For  instance,  a large  company in one  country  could be
considered a small company in another.

   For these reasons and because Vanguard International Value Portfolio does not
hold the same  securities held in the MSCI EAFE Index or any other market index,
the  performance  of the Portfolio will not mirror the returns of any particular
index.

   [FLAG] THE PORTFOLIO IS SUBJECT TO OBJECTIVE  RISK,  WHICH IS THE POSSIBILITY
          THAT RETURNS  FROM  INTERNATIONAL  STOCKS WILL TRAIL  RETURNS FROM THE
          U.S. STOCK MARKETS.  THE PRICES OF INTERNATIONAL STOCKS AND THE PRICES
          OF U.S. STOCKS HAVE OFTEN MOVED IN OPPOSITE DIRECTIONS.  THESE PERIODS
          HAVE, IN THE PAST, LASTED FOR AS LONG AS SEVERAL YEARS.

                           PLAIN TALK ABOUT

                             THE RISKS OF
                       INTERNATIONAL INVESTING

          Because foreign stock markets operate  differently  from the
          U.S. market, Americans investing abroad will encounter risks
          not typically associated with U.S. companies.  For instance,
          foreign  companies  are not subject to the same  accounting,
          auditing, and financial reporting standards and practices as
          U.S. companies;  and their stock may not be as liquid as the
          stock of similar U.S. companies. In addition,  foreign stock
          exchanges,   brokers,  and  companies  generally  have  less
          government  supervision  and  regulation  than in the United
          States. These factors, among others, could negatively impact
          the  returns   that   Americans   receive   from  a  foreign
          investment.  For  more  information,   see  the  Portfolio's
          Statement of Additional Information.

SECURITY SELECTION


UBS International  Investment London Limited (UBSII),  adviser to the Portfolio,
believes that research is the key to selecting  securities for an  international
stock  portfolio.  Much of this research  takes the form of on-site  visits.  In
1997, for instance, UBSII's investment analysts visited some 1,600 companies.


   To be  considered  for  Vanguard  International  Value  Portfolio,  a company
must--looking  at its  history  and  compared  to  similar  companies--be  cheap
statistically  (that is, have an above-average  yield and a relatively low price
considering  its  earnings,  book value,  and cash  flow);  be out of favor with
investors;  and appear to have a management  that is motivated to make  positive
changes.

   The adviser decides whether--and how much--to invest in each country by first
determining how many of a country's companies meet UBSII's value criteria. Other
factors in UBSII's country  selection process include the size of the market and
the variety of investment opportunities available within the market.

                           PLAIN TALK ABOUT

                      PORTFOLIO DIVERSIFICATION

          In  general,  the more  diversified  a fund's  portfolio  of
          stocks,   the  less  likely  that   specific   stock's  poor
          performance  will hurt the  fund.  One  measure  of a fund's
          level of  diversification  is the  percentage  of total  net
          assets represented by its ten largest holdings.  The average
          foreign  equity  mutual  fund has  about  25% of its  assets
          invested   in  its  ten   largest   holdings,   while   some
          less-diversified international mutual funds have 40% more of
          their assets invested in the stocks of just ten companies.

                                   6

<PAGE>

   [FLAG] THE  PORTFOLIO IS SUBJECT TO COUNTRY  RISK,  WHICH IS THE  POSSIBILITY
          THAT  POLITICAL  EVENTS (SUCH AS A WAR),  FINANCIAL  PROBLEMS (SUCH AS
          GOVERNMENT DEFAULT), OR NATURAL DISASTERS (SUCH AS AN EARTHQUAKE) WILL
          WEAKEN A COUNTRY'S  ECONOMY AND CAUSE  INVESTMENTS  IN THAT COUNTRY TO
          LOSE MONEY.

   The Portfolio  typically holds some 150 securities,  with the top 10 holdings
making up about 20% of the Portfolio's net assets.  The stocks are chosen from a
diverse range of industries.


   The  Portfolio's  top 10 holdings (which amounted to 29.8% of the Portfolio's
net assets) as of December 31, 1997, follow.

         1. Groupe Danone SA
         2. Nestle SA (Registered)
         3. Bayer AG
         4. Elf Aquitaine SA
         5. Electrolux AB B Shares
         6. BTR PLC
         7. Allied Domecq PLC
         8. Akzo Nobel NV
         9. AXA-UAP SA
        10. BG PLC


   The  Portfolio  is run by UBSII  according to  traditional  methods of active
investment management, which means that securities are bought and sold according
to UBSII's  judgments about companies and their financial  prospects,  and about
foreign stock markets and economies in general.

   [FLAG] THE  PORTFOLIO IS SUBJECT TO MANAGER  RISK,  WHICH IS THE  POSSIBILITY
          THAT  UBSII  MAY  DO A POOR  JOB OF  EVALUATING  FOREIGN  MARKETS  AND
          SELECTING STOCKS.

PORTFOLIO TURNOVER


Although the Portfolio  generally  seeks to invest for the long term, it retains
the right to sell  securities  regardless  of how long they have been held.  The
Portfolio's  average turnover rate for the past ten years has been about 40%. (A
turnover  rate of 100% would  occur,  for  example,  if the  Portfolio  sold and
replaced  securities  valued at 100% of its total net  assets  within a one-year
period.)


                                PLAIN TALK ABOUT

                               PORTFOLIO TURNOVER


          Before  investing in a mutual fund,  you should  review its  portfolio
          turnover rate for an indication of the potential effect of transaction
          costs on the fund's future returns. In general, the greater the volume
          of buying  and  selling  by the fund,  the  greater  the  impact  that
          brokerage  commissions  and other  transaction  costs will have on its
          return.  Also,  funds with high  portfolio  turnover rates may be more
          likely than low-turnover  funds to generate capital gains that must be
          distributed to shareholders as taxable  income.  The average  turnover
          rate for actively managed international stock funds is 64%.


INVESTMENT POLICIES

Besides  investing in stocks of foreign  companies,  the  Portfolio may follow a
number of investment policies to achieve its objectives.

   The Portfolio may enter into forward foreign currency  contracts,  which help
protect the Portfolio's  securities  against  unfavorable  short-term changes in
exchange  rates.  UBSII  will  use  these  contracts  to  eliminate  some of the
uncertainty of foreign exchange  rates--but will not speculate on changes in the
market.

                                       7

<PAGE>

   [FLAG] THE PORTFOLIO IS SUBJECT TO CURRENCY  RISK,  WHICH IS THE  POSSIBILITY
          THAT A  "STRONGER"  U.S.  DOLLAR  WILL REDUCE  RETURNS  FOR  AMERICANS
          INVESTING OVERSEAS.  GENERALLY, WHEN THE DOLLAR RISES IN VALUE AGAINST
          A FOREIGN  CURRENCY,  YOUR  INVESTMENT  IN THAT  COUNTRY  LOSES  VALUE
          BECAUSE ITS CURRENCY IS WORTH FEWER U.S. DOLLARS. ON THE OTHER HAND, A
          "WEAKER"  DOLLAR  GENERALLY  LEADS TO  HIGHER  RETURNS  FOR  AMERICANS
          HOLDING FOREIGN INVESTMENTS.

   The Portfolio may also invest in derivatives.

   [FLAG] ALTHOUGH IT HAS NOT DONE SO IN THE PAST,  THE  PORTFOLIO  RESERVES THE
          RIGHT TO INVEST,  TO A LIMITED  EXTENT,  IN STOCK  FUTURES AND OPTIONS
          CONTRACTS, WHICH ARE TRADITIONAL TYPES OF DERIVATIVES.

                                PLAIN TALK ABOUT

                                FORWARD FOREIGN
                               CURRENCY CONTRACTS

          A forward foreign  currency  contract is an agreement to buy
          or sell a country's currency at a specific price usually 30,
          60, or 90 days in the future.  In other words,  the contract
          guarantees  an exchange  rate on a given  date.  Managers of
          international  stock  funds  use  these  contracts  to guard
          against sudden,  unfavorable changes in U.S.  dollar/foreign
          currency  exchange rates. The contracts will not prevent the
          fund's  securities  from  falling  in value  during  foreign
          market declines.


   Losses (or gains)  involving  futures can sometimes be  substantial--in  part
because a relatively small price movement in a futures contract may result in an
immediate and  substantial  loss (or gain) for a portfolio.  This Portfolio will
not use futures and options for speculative purposes or as leveraged investments
that magnify the gains or losses of an  investment.  Rather,  the Portfolio will
keep separate cash reserves or other liquid  portfolio  securities in the amount
of the  obligation  underlying the futures or options  contract.  Only a limited
percentage of the  Portfolio's  assets--5%--may  be applied  toward the deposits
required on futures  contracts,  and the value of all futures contracts in which
the Portfolio  acquires an interest cannot exceed 20% of the  Portfolio's  total
assets.

   The reasons for which the Portfolio will invest in futures and options are:

   o  To keep cash on hand to meet shareholder  redemptions or other needs while
      simulating full investment in stocks.

   o  To  reduce  the  Portfolio's  transaction  costs or add value  when  these
      instruments are favorably priced.


   The Portfolio will usually hold only a small percentage of its assets in cash
reserves,  although if the investment  adviser  believes that market  conditions
warrant a temporary  defensive  measure,  the  Portfolio  may hold cash reserves
without limit.

                           PLAIN TALK ABOUT

                             DERIVATIVES

          A derivative is a financial contract whose value is based on
          (or "derived" from) a traditional  security (such as a stock
          or a bond),  an asset (such as a commodity like gold),  or a
          market  index  (such  as the S&P  500  Index).  Futures  and
          options are derivatives  that have been trading on regulated
          exchanges  for more than two  decades.  These  "traditional"
          derivatives  are  standardized  contracts that can easily be
          bought and sold,  and whose market values are determined and
          published   daily.   It  is   these   characteristics   that
          differentiate  futures and options from the  relatively  new
          types  of  derivatives.   If  used  for  speculation  or  as
          leveraged  investments,  derivatives can carry  considerable
          risks.

INVESTMENT LIMITATIONS


The Portfolio has adopted limitations on some of its investment  policies.  Some
of these limitations are that the Portfolio will not:


   o  Invest more than 5% of its assets in the securities of companies that have
      been in business for less than three years.

   o  Invest more than 25% of its assets in any one industry.

   o  Borrow money,  except for temporary or emergency purposes in an amount not
      exceeding  10% of its net assets.  Whenever  the  Portfolio's  outstanding
      borrowing is more than 5% of its assets, it will stop making investments.

                                        8

<PAGE>

With respect to 75% of its assets, this Portfolio will not:

   o  Invest more than 5% in the securities of any one company.

   o  Buy more than 10% of the outstanding voting securities of any company.


A complete list of the  Portfolio's  investment  limitations can be found in the
Statement of Additional  Information.  These limitations are fundamental and may
be changed only by approval of a majority of the Portfolio's shareholders.


                           PLAIN TALK ABOUT

                            CASH RESERVES

          With mutual funds,  holding cash  reserves--or  "cash"--does
          not mean  literally that the fund holds a stack of currency.
          Rather, cash reserves refer to short-term,  interest-bearing
          securities  that can easily and quickly be converted to cash
          as described in the prospectus glossary.  (Most mutual funds
          hold at  least  a  small  percentage  of  assets  in cash to
          accommodate  shareholder  redemptions.)  While  some  equity
          funds  strive to keep cash levels at a minimum and to always
          remain  fully  invested in stocks,  other equity funds allow
          investment  advisers  to hold up to 20% or more of a  fund's
          assets in cash reserves.

INVESTMENT PERFORMANCE

Vanguard  International  Value  Portfolio  invests  in  foreign  stocks,  so its
performance is tied to the  performance of many stock markets outside the United
States. Historically,  stock market performance,  both foreign and domestic, has
been  characterized  by sharp  up-and-down  swings in the short term and by more
stable growth over the long term.

<TABLE>
<CAPTION>


                          AVERAGE ANNUAL TOTAL RETURNS
                       FOR YEARS ENDED DECEMBER 31, 1997
<S>                                          <C>        <C>       <C>    

                                              1 YEAR    5 YEARS   10 YEARS
Vanguard International Value Portfolio         -4.6%      9.6%      7.6%
MSCI EAFE Index                                2.1%      11.7%      6.6%
</TABLE>

*Formerly known as Vanguard/Trustees' Equity Fund--International Portfolio.


   The results  shown above  represent  the  Portfolio's  "average  annual total
return"  performance,  which assumes that any distributions of capital gains and
dividends  were  reinvested  for  the  indicated   periods.   Also  included  is
comparative  information on the unmanaged  Morgan Stanley Capital  International
Europe, Australasia, and Far East (MSCI EAFE) Index. The chart does not make any
allowance for federal,  state, or local income taxes that  shareholders must pay
on a current basis.

   In weighing these performance figures, note that Vanguard International Value
Portfolio  was managed by  Batterymarch  Financial  Management,  Inc.,  from the
Portfolio's  inception  on  May  16,  1983,  until  March  31,  1996,  when  UBS
International  Investment  London  Limited  became  the  Portfolio's  investment
adviser.

                           PLAIN TALK ABOUT

                           PAST PERFORMANCE

          Whenever you see information on a fund's performance, do not
          consider the figures to be an indication of the  performance
          you could expect by making an  investment in the fund today.
          The past is an imperfect  guide to the future;  history does
          not repeat  itself in neat,  predictable  patterns.  This is
          particularly   true   of   international    markets,   which
          historically have been more volatile than U.S. markets.

                                       9

<PAGE>

SHARE PRICE


The Portfolio's  share price,  called its net asset value, or NAV, is calculated
each  business  day after the close of trading  on the New York Stock  Exchange,
generally 4 p.m. Eastern time. Net asset value per share is calculated by adding
up the total assets of the Portfolio,  subtracting  all of its  liabilities,  or
debts, and then dividing by the total number of Portfolio shares outstanding:


                              TOTAL ASSETS   --   LIABILITIES
         NET ASSET VALUE =   ---------------------------------
                               NUMBER OF SHARES OUTSTANDING

   The daily net asset value is useful to you as a shareholder  because the NAV,
multiplied  by the  number of  Portfolio  shares  you own,  gives you the dollar
amount  you would  have  received  had you sold all of your  shares  back to the
Portfolio that day.

   To help determine its daily share price,  the Portfolio  calculates the value
of its foreign securities in U.S. dollars. The Portfolio uses the daily exchange
rate employed by Morgan Stanley Capital  International in the calculation of its
own indexes.  If Morgan Stanley's exchange rate is not available,  the Portfolio
uses a rate according to policies set by the Fund's Board of Trustees.


   The Portfolio's share price can be found daily in the mutual fund listings of
most major newspapers under the heading "Vanguard  Funds." Different  newspapers
use different  abbreviations  of the  Portfolio's  name,  but the most common is
INTLVAL.  (Note  that,  prior to April  30,  1997,  the  Portfolio  was known as
Vanguard/Trustees'  Equity  Fund--International   Portfolio,  with  a  newspaper
abbreviation of TRINTL.)


                           PLAIN TALK ABOUT

                            DISTRIBUTIONS

          As a  shareholder,  you are  entitled  to your  share of the
          fund's  income from interest and  dividends,  and gains from
          the sale of investments. You receive such earnings as either
          an income  dividend or capital  gains  distribution.  Income
          dividends  come from the dividends  that the fund earns from
          its holdings as well as interest it receives  from its money
          market  and bond  investments.  Capital  gains are  realized
          whenever the fund sells securities for higher prices than it
          paid for them. These capital gains are either  short-term or
          long-term  depending on whether the fund held the securities
          for less than or more than one year.

DIVIDENDS, CAPITAL GAINS, AND TAXES


Each December,  the Portfolio  distributes to shareholders  virtually all of its
income from interest and  dividends,  as well as any capital gains realized from
the sale of securities.  In addition, the Portfolio may occasionally be required
to make supplemental  dividend or capital gains distributions at some other time
during the year. You can choose to receive your  distributions  of income and/or
capital  gains in cash,  or you can have  them  automatically  invested  in more
shares of the Portfolio. In either case, these distributions are taxable to you.
It is important to note that  distributions  of dividends and capital gains that
are declared in December--if paid to you by the end of January--are  taxed as if
they  had been  paid to you in  December.  Vanguard  will  send you a  statement
showing the tax status of all your distributions.

   o  The dividends and short-term capital gains that you receive are taxable to
      you as  ordinary  dividend  income.  Any  distributions  of net  long-term
      capital  gains by the  Portfolio  are taxable to you as long-term  capital
      gains, no matter how long you've owned shares in the Portfolio.  Long-term
      capital  gains may be taxed at different  rates  depending on how long the
      Portfolio  held the  securities.  Although the Portfolio  does not seek to
      realize any particular  amount of capital gains during a year,  such gains
      are realized from time to time as by-products  of the ordinary  investment
      activities  of  the  Portfolio.   Consequently,   distributions  may  vary
      considerably from year to year.


                           PLAIN TALK ABOUT

                         "Buying a Dividend"

          Unless  you  are  investing  in  a  tax-deferred  retirement
          account (such as an IRA), it is not to your advantage to buy
          shares of a fund  shortly  before  it makes a  distribution,
          because part of your  investment  will come back to you as a
          taxable distribution.  This is known as "buying a dividend."
          For example:  on December 15, you invest $5,000,  buying 250
          shares for $20 each. If the fund pays a  distribution  of $1
          per share on December  16, its share price would drop to $19
          (not  counting  market  change).  You would  still have only
          $5,000 (250 shares x $19 = $4,750 in share  value,  plus 250
          shares x $1 = $250 in distributions),  but you would owe tax
          on the  $250  distribution  you  received,  even  if you had
          reinvested the dividends in more shares.  To avoid "buying a
          dividend," check a fund's  distribution  schedule before you
          invest.

                                       10

<PAGE>

   o  If you sell or exchange shares of the Portfolio, any gain or loss you have
      is a taxable event, which means that you may have a capital gain to report
      as income,  or a capital loss to report as a deduction,  when you complete
      your federal income tax return.

   o  Distributions  of dividends or capital gains,  and capital gains or losses
      from your sale or exchange of  Portfolio  shares,  may be subject to state
      and local income taxes as well.

   The Portfolio may "pass through" to shareholders  any foreign income taxes it
is required to pay. As a  shareholder,  you need to report your "share" of these
taxes as part of your gross income.  You can treat the tax either as an itemized
deduction or as a foreign tax credit on your tax return.

   The tax information in this prospectus is provided as general information and
will not apply to you if you are investing in a tax-deferred  account such as an
IRA.  You should  consult  your tax  adviser  about the tax  consequences  of an
investment in the Portfolio.

THE PORTFOLIO AND VANGUARD


Vanguard  International Value Portfolio of  Vanguard/Trustees'  Equity Fund is a
member of The Vanguard Group, a family of more than 30 investment companies with
more than 95 distinct  investment  portfolios  and total net assets of more than
$360 billion.  All of the Vanguard funds share in the expenses  associated  with
business  operations,   such  as  personnel,   office  space,   equipment,   and
advertising.


   Vanguard also provides marketing services to the funds. Although shareholders
do not pay  sales  commissions  or 12b-1  marketing  fees,  each  fund  pays its
allocated share of The Vanguard Group's costs.

   A list of the Fund's Trustees and officers,  and their present  positions and
principal  occupations during the past five years, can be found in the Statement
of Additional Information.

INVESTMENT ADVISER

The Portfolio  employs UBS  International  Investment  London  Limited  (UBSII),
Triton Court, 14 Finsbury  Square,  London EC2A 1PD, as its investment  adviser.
UBSII manages the Portfolio  subject to the control of the Trustees and officers
of the Fund.

                           PLAIN TALK ABOUT

                VANGUARD'S UNIQUE CORPORATE STRUCTURE

          The Vanguard  Group,  Inc.,  is the only MUTUAL  mutual fund
          company. It is owned jointly by the funds it oversees and by
          the  shareholders  in those  funds.  Other  mutual funds are
          operated  by  for-profit  management  companies  that may be
          owned  by one  person,  by a  group  of  individuals,  or by
          investors  who  bought  the  management  company's  publicly
          traded stock.  Because of its structure,  Vanguard  operates
          its funds at cost.  Instead  of  distributing  profits  from
          operations  to  a  separate  management  company,   Vanguard
          returns  profits to fund  shareholders  in the form of lower
          operating expenses.

                                       11

<PAGE>

   UBSII's  advisory fee is calculated at the end of each fiscal  quarter and is
based on the Portfolio's average month-end net assets during that quarter:
<TABLE>
<CAPTION>

- ------------------------------------------
<S>                           <C>
AVERAGE NET ASSETS            ANNUAL FEE
- ------------------------------------------
First $50 million               0.475%
Next $450 million               0.150
Next $500 million               0.120
Assets over $1 billion          0.110
- ------------------------------------------
</TABLE>

The advisory fee may be  increased  or  decreased by an  incentive/  penalty fee
based on the  Portfolio's  total return  performance  as compared to that of the
MSCI EAFE  Index.  Under the fee  schedule,  the basic fee may be  increased  or
decreased  by as  much as 50%.  The  incentive/penalty  fee  will  not be  fully
operable until June 30, 1999. Until that date, the incentive/penalty fee will be
calculated using certain transition rules that are explained in the Statement of
Additional Information.


   For the year ended  December  31,  1997,  the  advisory  fee  represented  an
effective annual basic rate of 0.15% of the Portfolio's average net assets, with
no adjustment required based on performance.


   The  agreement  authorizes  UBSII to choose  brokers or dealers to handle the
purchases  and sales of the  Portfolio's  securities,  and directs  UBSII to use
every effort to get the best available  price and most favorable  execution from
these  brokers  with  respect to all  transactions.  At times,  UBSII may choose
brokers  who charge  higher  commissions  in the  interest of  obtaining  better
execution  of a  transaction.  If more  than  one  broker  can  obtain  the best
available  price  and  favorable  execution  of a  transaction,  then  UBSII  is
authorized  to choose a broker who, in addition to  executing  the  transaction,
will provide research  services to UBSII or the Portfolio.  However,  UBSII will
not pay higher  commissions  specifically for the purpose of obtaining  research
services.  The Portfolio may direct UBSII to use a particular broker for certain
transactions in exchange for commission rebates or research services provided to
the Portfolio.

   The Fund's Board of Trustees may,  without prior approval from  shareholders,
change the terms of the  advisory  agreement or hire a new  investment  adviser,
either as a replacement for UBSII or as an additional adviser.  However, no such
change would be made before giving shareholders 30 days' notice, in writing.

                           PLAIN TALK ABOUT

                       THE PORTFOLIO'S ADVISER


          UBS  International  Investment London Limited (UBSII) traces
          its roots to the British  brokerage  firm,  Phillips & Drew,
          which was acquired by the Union Bank of Switzerland in 1985.
          UBSII,   which  was  created  two  years  later  to  provide
          investment management services to clients outside the United
          Kingdom,  currently  manages  some $7.9  billion  in assets.
          Although the adviser uses a team approach, the managers with
          primary  responsibility  for  Vanguard  International  Value
          Portfolio are:

             WILSON PHILLIPS,  CFA, Investment Manager;  has worked in
          investment  management  since  1980;  with UBSII since 1987;
          B.S., Glasgow University.

             ROBIN APPS,  Investment Manager and Investment  Committee
          Member; has worked in investment management since 1984; with
          UBSII since 1986; B. Soc. SC., Birmingham University.


GENERAL INFORMATION

Vanguard  International  Value  Portfolio is one of two  Portfolios of Vanguard/
Trustees' Equity Fund, a Pennsylvania business trust. The other Portfolio is the
U.S.  Portfolio.  The  Portfolios  are  combined  under one  business  trust for
administrative  purposes,  but in virtually  all respects  operate like separate
business trusts.

                                       12

<PAGE>

   Shareholders  of  Vanguard  International  Value  Portfolio  have  rights and
privileges  similar to those  enjoyed by corporate and trust  shareholders.  For
example,  shareholders will not be responsible for any liabilities of the trust.
If any  matters  are to be voted  on by  shareholders  (such  as a  change  in a
fundamental  investment  objective  or the  election  of  Trustees),  each share
outstanding  at that point would be entitled to one vote.  Annual  meetings will
not be held by the Portfolio except as required by the Investment Company Act of
1940.  A meeting  will be  scheduled  to vote on the removal of a Trustee if the
holders of at least 10% of the Portfolio's shares request a meeting in writing.

"Standard & Poor's 500," "S&P  500(R),"  "Standard &  Poor's(R),"  "S&P(R)," and
"500" are trademarks of The McGraw-Hill Companies, Inc.

                                       13

<PAGE>

INVESTING WITH VANGUARD

Are you looking for the most  convenient  way to open or add money to a Vanguard
account?  Obtain instant access to fund information?  Establish an account for a
minor child or for your retirement savings?

   Vanguard  can help.  Our goal is to make it easy and  pleasant  for you to do
business with us.

   The following sections of the prospectus briefly explain the many services we
offer you as a Vanguard  International  Value  Portfolio  shareholder.  Booklets
providing  detailed  information  are  available on the  services  marked with a
[BOOK]. Please call us to request copies.

SERVICES AND ACCOUNT FEATURES

Vanguard  offers many services that make it convenient to buy, sell, or exchange
shares.

TELEPHONE REDEMPTIONS              Automatically set up for the Portfolio unless
(SALES AND EXCHANGES)              you notify us otherwise.
[BOOK]

VANGUARD DIRECT DEPOSIT            Automatic method for depositing your paycheck
SERVICE(TM)                        or U.S. government payment (including Social
[BOOK]                             Security and government pension checks) into
                                   your account.

VANGUARD AUTOMATIC EXCHANGE        Automatic method for moving a fixed amount of
SERVICE(SM)                        money from one Vanguard fund account to
[BOOK]                             another.*

VANGUARD FUND EXPRESS(R)           Electronic method for buying or selling
[BOOK]                             shares. You can transfer money between your
                                   Vanguard fund account and an account at your
                                   bank, savings and loan, or credit union on a
                                   systematic schedule or whenever you wish.*

VANGUARD DIVIDEND EXPRESS(SM)      Electronic method for transferring dividend
[BOOK]                             and/or capital gains distributions directly
                                   from your Vanguard fund account to your bank,
                                   savings and loan, or credit union account.

VANGUARD BROKERAGE SERVICES        A cost-effective way to trade stocks, bonds,
(VBS)                              and options on major exchanges, Nasdaq, and
[BOOK]                             other domestic over-the-counter markets at
                                   reduced rates, and to buy and sell shares of
                                   non-Vanguard mutual funds. Call VBS
                                   (1-800-992-8327) for additional information
                                   and the appropriate forms.

*Can be used to "dollar-cost average" [BOOK] or to contribute to an IRA or other
retirement plan.

                                       14

<PAGE>
TYPES OF ACCOUNTS

INDIVIDUAL OR OTHER ENTITY

Vanguard's  account  registration  form can be used to  establish  a variety  of
nonretirement accounts.

FOR ONE OR MORE PEOPLE             To open an account in the name of one
                                   (individual) or more (joint tenants) people.
                                   $3,000 minimum initial investment.


FOR A MINOR CHILD                  To open an account as an UGMA/UTMA (Uniform
[BOOK]                             Gifts/Transfers to Minors Act). Age of
                                   majority and other requirements are set by
                                   state law. $1,000 minimum initial investment.

FOR A MINOR CHILD                  To open an account as an Education IRA.
(Vanguard Fiduciary Trust          Eligibility and other requirements are
Company is the custodian)          established by federal tax law and the
[BOOK]                             Vanguard Education IRA. (Note: You should
                                   establish this type of account with a
                                   Vanguard adoption agreement--not an account
                                   registration form.) Please call Investor
                                   Information to request the appropriate
                                   brochure and forms. $500 minimum initial
                                   investment.

FOR HOLDING TRUST ASSETS           To invest assets held in an existing trust.
[BOOK]                             $3,000 minimum initial investment.


FOR THIRD-PARTY TRUSTEE            To open an account as a retirement trust or
RETIREMENT INVESTMENTS             plan based on an existing corporate or
(Vanguard is not the custodian     institutional plan. These accounts are
or trustee.)                       established by the custodian or trustee of
1-800-662-2003                     the existing plan. $1,000 minimum initial
Individual Retirement Plans        investment.


FOR AN ORGANIZATION                To open an account as a corporation,
                                   partnership, or other entity. These accounts
                                   may require a corporate resolution or other
                                   documents to name the individuals authorized
                                   to act. $3,000 minimum initial investment.

RETIREMENT

You establish these accounts with a Vanguard adoption  agreement--not a Vanguard
account  registration  form. To request the appropriate  adoption  agreement and
forms,  or to ask  questions  about  investing  for  retirement,  call  Investor
Information.

FOR A TRADITIONAL INDIVIDUAL       To open a retirement account in the name of
RETIREMENT ACCOUNT                 an individual. Traditional IRAs can be
(TRADITIONAL IRA)                  established with a contribution, a direct
(Vanguard Fiduciary Trust          rollover from an employer's plan such as a
Company is the custodian.)         as a 401(k), or an asset transfer or rollover
                                   from another financial institution, such as a
                                   bank or mutual fund company. $1,000 minimum
                                   initial investment.

FOR A ROTH INDIVIDUAL              To open an after-tax retirement savings
RETIREMENT ACCOUNT                 account in the name of an individual. Roth
(ROTH IRA)                         IRAs can be established with an after-tax
(Vanguard Fiduciary Trust          contribution, an asset transfer or rollover
Company is the custodian.)         from another financial institution such as a
                                   bank or mutual fund company, or a conversion
                                   of an existing IRA. Eligibility and other
                                   requirements are established by federal tax
                                   law. $1,000 minimum initial investment.


                                       15

<PAGE>

FOR A SIMPLIFIED EMPLOYEE          To open a retirement account in the name of
PENSION PLAN ACCOUNT (SEP-IRA)     an employee. SEPs allow employers to make
(Vanguard Fiduciary Trust          deductible contributions directly to IRAs
Company is the custodian.)         established by their employees. SEPs can be
1-800-662-2003                     established by people who are self-employed,
Individual Retirement Plans        small-business owners, partnerships, or
                                   corporations.

FOR A SAVINGS INCENTIVE MATCH      To open a retirement account in the name of
PLAN FOR EMPLOYEES ACCOUNT         an employee. Created as part of the Small
(SIMPLE IRA)                       Business Job Protection Act of 1996, SIMPLEs
(Vanguard Fiduciary Trust          replace SAR-SEPs. SIMPLEs are exclusively for
Company is the custodian.)         employers that had 100 or fewer employees in
1-800-662-2003                     the most recent calendar year and that do not
Individual Retirement Plans        not maintain another employer-sponsored
                                   retirement plan. SIMPLEs can be established
                                   by people who are self-employed, small
                                   business owners, partnerships, or
                                   corporations. Salary reduction contributions
                                   may be made by the employee, with matching or
                                   nonmatching contributions from the employer.

FOR A QUALIFIED RETIREMENT         To open a retirement account that allows
PROGRAM ACCOUNT                    small-business owners or people who are self-
(Vanguard Fiduciary Trust          employed to make tax-deductible retirement
Company can be the custodian.)     contributions for themselves and their
1-800-662-2003                     employees into Profit-Sharing and Money
Individual Retirement Plans        Purchase Pension (Keogh) plans.

FOR A 403(B)(7) CUSTODIAL ACCOUNT  To open a retirement account that allows
(Vanguard Fiduciary Trust          employees of tax-exempt institutions
Company is the custodian.)         (for example, schools or hospitals) to make
1-800-662-2003                     pretax retirement contributions.
Individual Retirement Plans


DISTRIBUTION OPTIONS

You can receive  distributions  of dividends and/or capital gains in a number of
ways:

REINVESTMENT                       Dividends and capital gains are automatically
                                   reinvested in additional shares of the
                                   Portfolio unless you request a different
                                   distribution method.

DIVIDENDS IN CASH                  Dividends are paid by check and mailed to
                                   your account's address of record, and capital
                                   gains are reinvested in additional shares of
                                   the Portfolio.

CAPITAL GAINS IN CASH              Capital gains distributions are paid by check
                                   and mailed to your account's address of
                                   record, and dividends are reinvested in
                                   additional shares of the Portfolio.

DIVIDENDS AND CAPITAL GAINS        Both dividends and capital gains
IN CASH                            distributions are paid by check and mailed to
                                   your account's address of record.

To  electronically  transfer cash  dividends  and/or capital gains to your bank,
savings and loan, or credit union account,  see Vanguard  Dividend Express under
"Services and Account Features." To transfer cash dividends and/or capital gains
to another Vanguard fund, call Client Services.

                                       16

<PAGE>

DISTRIBUTION OPTIONS (continued)


If you have elected to receive  dividend and/or capital gains  distributions  in
cash,  but the Postal  Service  is unable to make  delivery  to your  address of
record,  your distribution  option will be changed to reinvestment.  No interest
will accrue on amounts represented by uncashed distribution checks.


BUYING SHARES


You buy your  shares at the  Portfolio's  next-determined  net asset value after
Vanguard  receives  your  request,  provided we receive your request  before the
close of trading on the New York Stock  Exchange (the  "Exchange"),  generally 4
p.m. Eastern time. The Portfolio is offered on a no-load basis, meaning that you
do not pay sales commissions or 12b-1 marketing fees.


                         OPEN A NEW ACCOUNT          ADD TO AN EXISTING ACCOUNT

MINIMUM INVESTMENT       $3,000 (regular account);   $100 by mail or exchange;
                         $1,000 (Traditional IRAs,   $1,000 by wire.
                         Roth IRA's, and custodial
                         accounts for minors); $500
                         (Education IRAs).

BY MAIL                  Complete and sign the       Mail your check with an
[ENVELOPE]               application form.           Invest-By-Mail form
First-class mail to:                                 detached from your
The Vanguard Group                                   confirmation statement to
P.O. Box 2600                                        the address listed on the
Valley Forge, PA                                     form.
19482-2600
                         Make your check payable     Make your check payable
EXPRESS or REGISTERED    to: The Vanguard Group--46  to: The Vanguard Group--46
mail to:
The Vanguard Group       All purchases must be made  All purchases must be made
455 Devon Park Drive     in U.S. dollars, and        in U.S. dollars, and
Wayne, PA 19087-1815     checks must be drawn on     checks must be drawn on
                         U.S. banks.                 U.S. banks.

IMPORTANT  NOTE:  To prevent  check fraud,  Vanguard will not accept checks made
payable to third parties.

BY TELEPHONE             Call Vanguard Tele-Account* Call Vanguard Tele-Account*
[TELEPHONE]              24 hours a day--or Client   24 hours a day--or Client
1-800-662-6273           Services during business    Services during business
Vanguard Tele-Account(R) hours--to exchange from     hours--to exchange from
                         another Vanguard fund       another Vanguard fund
1-800-662-2739           account with the same       account with the same
Client Services          registration (name,         registration (name,
                         address, taxpayer I.D.,     address, taxpayer I.D.,
                         and account type).          and account type).

                                                     Use Vanguard Fund Express
                                                     (see "Services and Account
                                                     Features") to transfer
                                                     assets from your bank
                                                     account. Call Client
                                                     Services before your first
                                                     use to verify that this
                                                     option is in place.

                         *You must obtain a Personal Identification Number
                         through Tele-Account at least seven days before you
                         request your first exchange.

IMPORTANT  NOTE:  Once a telephone  transaction  has been  approved by you and a
confirmation  number  assigned,  it cannot be  revoked.  We reserve the right to
refuse any purchase.

                                       17

<PAGE>

                         OPEN A NEW ACCOUNT           ADD TO AN EXISTING ACCOUNT

BY WIRE                  Call Client Services to     Call Client Services to
[WIRE]                   arrange your wire           arrange your wire
Wire to:                 transaction.                transaction.
CoreStates Bank, N.A.
ABA 031000011            Wire transactions are not   Wire transactions are not
CoreStates No. 01019897  available for retirement    available for retirement
[Temporary Account       accounts, except for asset  accounts, except for asset
Number]                  transfers and direct        transfers and direct
Vanguard International   rollovers.                  rollovers.
Value Portfolio
[Account Registration]
Attention: Vanguard


AUTOMATICALLY                        --              Vanguard offers a variety
[CIRCLE OF ARROWS]                                   of ways that you can add to
                                                     your account automatically.
                                                     See "Services and Account
                                                     Features."

You can redeem (that is, sell or exchange) shares purchased by check or Vanguard
Fund  Express  at any time.  However,  while  your  redemption  request  will be
processed  at the  next-determined  net asset value after it is  received,  your
redemption  proceeds  will not be available  until  payment for your purchase is
collected, which may take up to ten calendar days.

IMPORTANT NOTE: If you buy Portfolio  shares through a registered  broker/dealer
or investment  adviser,  the  broker/dealer  or adviser may charge you a service
fee.

   It is  important  that you call  Vanguard  before you  invest a large  dollar
amount  by wire or  check.  We must  consider  the  interests  of all  Portfolio
shareholders  and so reserve the right to delay or refuse any purchase that will
disrupt the Portfolio's operation or performance.

REDEEMING SHARES

IMPORTANT TAX NOTE:  Any sale or exchange of shares in a  nonretirement  account
could result in a taxable gain or a loss.


The ability to redeem (that is, sell or exchange)  Portfolio shares by telephone
is automatically  established for your nonretirement  account unless you tell us
in writing that you do not want this option.


   To  protect  your  account  from   unauthorized   or   fraudulent   telephone
instructions,  Vanguard follows specific security procedures.  When we receive a
call requesting an account transaction, we require the caller to provide:

   [CHECK] Portfolio name.

   [CHECK] 10-digit account number.

   [CHECK] Name and address exactly as registered on that account.

   [CHECK] Social  Security or employer  identification  number as registered on
that account.

   If you call to sell shares, the sale proceeds will be made payable to you, as
the registered shareholder, and mailed to your account's address of record.

   If we follow  reasonable  security  procedures,  neither  the  Portfolio  nor
Vanguard will be responsible for the  authenticity  of transaction  instructions
received by telephone. We believe that these procedures are reasonable and that,
if we follow them, you bear the risk of any losses  resulting from  unauthorized
or fraudulent telephone transactions on your account.

                                       18

<PAGE>

REDEEMING SHARES (continued)

HOW TO SELL SHARES

You may withdraw any part of your account,  at any time, by selling shares. Sale
proceeds are normally  mailed within two business days after  Vanguard  receives
your  request.   The  sale  price  of  your  shares  will  be  the   Portfolio's
next-determined  net asset value after Vanguard receives all required  documents
in good order.

Good order means that the request includes:

   [CHECK] Portfolio name and account number.

   [CHECK] Amount of the transaction (in dollars or shares).

   [CHECK] Signatures of all owners exactly as registered on the account.

   [CHECK] Signature guarantees (if required).

   [CHECK] Any supporting legal documentation that may be required.

   [CHECK] Any certificates you are holding for the account.



   Sales or  exchange  requests  received  after  the  close of  trading  on the
Exchange are processed at the next business  day's net asset value.  No interest
will accrue on amounts  represented by uncashed redemption checks. The Portfolio
will not cancel any trade (e.g., purchase,  redemption, or exchange) believed to
be  authentic  once  the  trade  request  has been  received  in  writing  or by
telephone.

   The  Portfolio  reserves  the right to close any  nonretirement  or UGMA/UTMA
account whose balance falls below the minimum initial investment.  The Portfolio
will deduct a $10 annual fee in either  June or  December if your  nonretirement
account  balance falls below $2,500 or if your UGMA/UTMA  account  balance falls
below $500. The fee is waived if your total Vanguard  account assets are $50,000
or more.


Some written  requests  require a signature  guarantee from a bank,  broker,  or
other  acceptable  financial  institution.  A notary  public  cannot  provide  a
signature guarantee.

HOW TO EXCHANGE SHARES

An exchange is the selling of shares of one Vanguard fund to purchase  shares of
another.

   Although we make every effort to maintain the  exchange  privilege,  Vanguard
reserves the right to revise or  terminate  the  exchange  privilege,  limit the
amount of an exchange, or reject any exchange, at any time, without notice.


   Because  excessive  exchanges can  potentially  disrupt the management of the
Portfolio and increase  transaction costs,  Vanguard limits exchange activity to
TWO SUBSTANTIVE EXCHANGE REDEMPTIONS (at least 30 days apart) from the Portfolio
during any 12-month  period.  "Substantive"  means  either a dollar  amount or a
series of movements between Vanguard funds that Vanguard determines, in its sole
discretion, could have an adverse impact on the management of the Portfolio.


   Before you exchange into a new Vanguard fund, be sure to read its prospectus.
For a  copy  and  for  answers  to  questions  you  might  have,  call  Investor
Information.

                                       19

<PAGE>
SELLING OR EXCHANGING SHARES    ACCOUNT TYPE

BY TELEPHONE                    ALL TYPES EXCEPT RETIREMENT:
[TELEPHONE]                     Call Vanguard Tele-Account* 24 hours a day--or
1-800-662-6273                  Client Services during business hours--to sell
Vanguard Tele-Account           or exchange shares. You can exchange shares from
                                this Portfolio to open an account in another
1-800-662-2739                  Vanguard fund or to add to an existing Vanguard
Client Services                 fund account with an identical registration.

                                RETIREMENT:
                                You can exchange--but not sell--shares by
                                calling Tele-Account or Client Services.

                                *You must obtain a Personal Identification
                                Number through Tele-Account at least seven days
                                before you request your first redemption.

BY MAIL                         ALL TYPES EXCEPT RETIREMENT:
[ENVELOPE]                      Send a letter of instruction signed by all
FIRST-CLASS mail to:            registered account holders. Include the fund
The Vanguard Group              name and account number and (if you are selling)
Vanguard International          a dollar amount or number of shares OR (if you
Value Portfolio                 are exchanging) the name of the fund you want to
P.O. Box 1120                   exchange into and a dollar amount or number of
Valley Forge, PA 19482-1120     shares. To exchange into an account with a
                                different registration (including a different
Express or Registered mail to:  name, address, or taxpayer identification
The Vanguard Group              number), you must provide Vanguard with written
Vanguard International          instructions that include the guaranteed
Value Portfolio                 signatures of all current account owners.
455 Devon Park Drive
Wayne, PA 19087-1815            RETIREMENT:
                                For information on how to request distributions
                                from:
                                o Traditional IRAs, Roth IRAs, Education IRAs--
                                  call Client Services.
                                o SEP--IRAs, SIMPLE IRAs, 403(b)(7) custodial
                                  accounts, and Profit-Sharing and Money
                                  Purchase Pension (Keogh) Plans--call
                                  Individual Retirement Plans at 1-800-662-2003.
                                Depending on your account registration type,
                                additional documentation may be required.


EXCHANGING SHARES ONLINE        You may use your personal computer to exchange
[COMPUTER]                      shares of most Vanguard funds by accessing our
                                website (www.vanguard.com). To establish this
                                service for your account, you must first
                                register through the website. We will then send
                                to you, by mail, an account access password that
                                will enable you to make online exchanges.

                                The Vanguard funds that you cannot purchase or
                                sell through online exchange are VANGUARD INDEX
                                TRUST, VANGUARD BALANCED INDEX FUND, VANGUARD
                                INTERNATIONAL EQUITY INDEX FUND, VANGUARD REIT
                                INDEX PORTFOLIO, VANGUARD TOTAL INTERNATIONAL
                                PORTFOLIO, and VANGUARD GROWTH AND INCOME
                                PORTFOLIO (formerly known as Vanguard
                                Quantitative Portfolios). These funds do permit
                                online exchanges within IRAs and other
                                retirement accounts.


AUTOMATICALLY                   ALL TYPES EXCEPT RETIREMENT:
[CIRCLE OF ARROWS]              Vanguard offers several ways to sell or exchange
                                shares automatically (see "Services and Account
                                Features"). Call Investor Information for the
                                appropriate booklet and application if you did
                                not elect this feature when you opened your
                                account.

                                       20

<PAGE>

REDEEMING SHARES (continued)

   It is  important  that you call  Vanguard  before you  redeem a large  dollar
amount.  We must  consider the interests of all  Portfolio  shareholders  and so
reserve the right to delay  delivery of your  redemption  proceeds--up  to seven
days--if the amount will disrupt the Portfolio's operation or performance.

                        A NOTE ON UNUSUAL CIRCUMSTANCES

Vanguard  reserves the right to revise or  terminate  the  telephone  redemption
privilege at any time,  without notice.  In addition,  Vanguard can stop selling
shares or postpone  payment at times when the New York Stock  Exchange is closed
or  under  any  emergency  circumstances  as  determined  by the  United  States
Securities  and  Exchange  Commission.  If you  experience  difficulty  making a
telephone  redemption  during periods of drastic economic or market change,  you
can send us your request by regular or express mail.  Follow the instructions on
selling or exchanging shares by mail in the "Redeeming Shares" section.


TRANSFERRING REGISTRATION

HOW TO TRANSFER SHARES

You may transfer the  registration  of any of your  Portfolio  shares to another
owner by  completing  a transfer  form and  sending it to: The  Vanguard  Group,
Attention: Transfer Department, P.O. Box 1110, Valley Forge, PA 19482-1110.


PORTFOLIO AND ACCOUNT UPDATES

STATEMENTS AND REPORTS


We will send you clear,  concise  account  and tax  statements  to help you keep
track of your Vanguard International Value Portfolio account throughout the year
as well as when you are preparing your income tax returns.

   In addition,  you will receive  financial reports about the Portfolio twice a
year.  These  comprehensive  reports  include an assessment  of the  Portfolio's
performance  (and a comparison  to its industry  benchmark),  an overview of the
markets, a report from the adviser, a listing of the Portfolio's  holdings,  and
other financial statements. To keep the Portfolio's costs as low as possible (so
that you and  other  shareholders  can keep more of the  Portfolio's  investment
earnings),  Vanguard  attempts  to  eliminate  duplicate  mailings  to the  same
address. When we find that two or more Portfolio shareholders have the same last
name and address, we send just one Portfolio report to that  address--instead of
mailing  separate reports to each  shareholder.  If you want us to send separate
reports,  however,  you  may  notify  our  Investor  Information  Department  at
1-800-662-7447.


                                       21

<PAGE>
CONFIRMATION STATEMENT          Sent each time you buy, sell, or exchange
                                shares; confirms the date and the amount of your
                                transaction.

PORTFOLIO SUMMARY               Mailed quarterly; shows the market value of your
[BOOK]                          account at the close of the statement period, as
                                well as distributions, purchases, sales, and
                                exchanges for the current calendar year.

FUND FINANCIAL REPORTS          Mailed in February and August for this
                                Portfolio.

TAX STATEMENTS                  Generally mailed in January; report previous
                                year's dividend distributions, proceeds from the
                                sale of shares, and distributions from IRAs or
                                other retirement accounts.


AVERAGE COST STATEMENT          Issued quarterly for most taxable accounts
[BOOK]                          (accompanies your Portfolio Summary); shows the
                                average cost of shares that you redeemed during
                                the calendar year, using the average cost single
                                category method.


AUTOMATED TELEPHONE ACCESS

VANGUARD TELE-ACCOUNT           Toll-free access to Vanguard fund and account
1-800-662-6273                  information--as well as some transactions--
Any time, seven days a week,    through any touch-tone telephone. Tele-Account
from anywhere in the            provides total return, share price, price
continental United States.      change, and yield quotations for all Vanguard
[BOOK]                          funds; gives your account balances and history
                                (e.g., last transaction, latest dividend
                                distribution); and allows you to sell or
                                exchange fund shares.


COMPUTER ACCESS

VANGUARD ONLINE(R)              Use your personal computer to learn more about
www.vanguard.com                Vanguard's funds and services; keep in touch
                                with your Vanguard accounts; map out a long-term
                                investment strategy; initiate certain
                                transactions; and ask questions, make
                                suggestions, and send messages to Vanguard.

                                Our education-oriented website provides timely
                                news and information about Vanguard's funds and
                                services; an online "university" that offers a
                                variety of mutual fund classes; and easy-to-use,
                                interactive tools to help you create your own
                                investment and retirement strategies.


                                       22

<PAGE>

PROSPECTUS POSTSCRIPT

This  prospectus  is designed to provide you with  pertinent  information  about
Vanguard  International Value Portfolio,  including their investment objectives,
risks,  strategies,  and  expenses,  as well as services  available  to you as a
shareholder.

   It is  important  that you  understand  these  facts  so that you can  decide
whether an investment in the Portfolio is right for you. The following questions
offer a quick review of some of the subjects covered by this prospectus.

IN READING THE PROSPECTUS, DID YOU LEARN:

   o  The Portfolio's objectives? (page 4)

   o  The Portfolio's investment strategy? (page 5)

   o  Who should invest in the Portfolio? (page 4)

   o  The risks associated with the Portfolio? (pages 4--8)

   o  Whether the Portfolio is federally insured? (inside front cover)

   o  The Portfolio's expenses? (page 2)

   o  The background of the Portfolio's investment manager? (page 12)

   o  How to open an account? (page 17)

   o  How to sell or exchange shares? (pages 18-21)

   o  How often you'll receive statements and financial reports? (page 21)

                                PLAIN TALK ABOUT

                            KEEPING YOUR PROSPECTUS

          Reading  this  prospectus  will help you to  decide  whether
          Vanguard  International Value Portfolio is suitable for your
          investment  goals. If you decide to invest,  don't throw the
          prospectus  out;  you  will  no  doubt  need  it for  future
          reference.

                                  23

<PAGE>

AN INVESTMENT PRIMER

Whether you are investing for the short or long term, keep these three points in
mind:

1. INVEST IN ALL THREE OF THE MAJOR ASSET CLASSES.

Most people use a combination of . . .

   o  Stocks,  which are  considered  the "riskiest" of the three asset classes.
      Day to day, or even year to year,  stocks tend to have wide price  swings.
      Despite this potential for significant price fluctuation,  however, stocks
      have  historically  offered  higher  returns  than the other  major  asset
      classes over longer periods.

   o  Bonds,  which are chiefly  influenced by changes in interest  rates.  When
      interest rates climb,  bond prices drop;  when interest  rates fall,  bond
      prices rise.

   o  Cash reserves,  which offer more  share-price (or capital)  stability than
      stocks or  bonds--but  also  generate  lower  returns.  Some  examples are
      Treasury bills and money market funds.

2. REMEMBER THAT SAFETY HAS A PRICE.

Many people want a "no-risk" investment.  Remember, though, that the more safety
you seek, the less potential  reward you can expect--and the less you can expect
in returns  after  inflation.  Inflation  affects not only the price you pay for
goods and services; it also eats away at your investment returns over time. What
is left is known as your "real"  return--the actual return you receive after you
factor in inflation (see the chart at left).

3. CHANCES ARE GOOD THAT YOU CAN AFFORD TO TAKE MORE RISK.

As the chart shows,  inflation cuts into the returns of all three asset classes.
However,  stocks and bonds have had an easier time of outpacing  inflation  over
time--which  means  that,  to beat  inflation,  you  may  need  to  invest  more
aggressively.

   Don't be put off by  potential  downswings  in the value of your  investment,
especially if you are investing for long periods. Time acts as a shock absorber,
letting you ride out the short-term  bumps that investments  often provide.  The
longer  you hold an  investment,  the  more  likely  it is that you will  earn a
positive return.

                                PLAIN TALK ABOUT

                         INFLATION AND YOUR INVESTMENTS

          No matter how you invest your money,  inflation--the  rising
          cost of  living--is  a  constant  threat to your  investment
          returns.  The chart below shows how stocks,  bonds, and cash
          reserves have fared against inflation over time.

                        INFLATION'S EFFECT ON
                          INVESTMENT RETURNS
                             (1926--1997)

                               [CHART]

Source:  [COPYRIGHT  Stocks,  Bonds,  Bills,  and Inflation  1998  Yearbook(TM),
Ibbotson Associates, Chicago (annually updates work by Roger G. Ibbotson and Rex
A. Sinquefield). Used with permission. All rights reserved.

                                       24

<PAGE>

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION

Payment  to  mutual  fund  shareholders  of gains  realized  during  the year on
securities that the fund has sold at a profit, minus any realized losses.

CASH RESERVES

Cash reserves as well as short-term  bank  deposits,  money market  instruments,
U.S. Treasury bills, bank certificates of deposit (CDs),  repurchase agreements,
commercial paper, and banker's acceptances.

COMMON STOCK

A security  representing  ownership  rights in a  corporation.  A stockholder is
entitled  to share in the  company's  profits,  some of which may be paid out as
dividends.

COUNTRY RISK

The  possibility  that  events  such as  changes  in  regulation,  political  or
financial  troubles,  or natural  disasters will weaken a country's  economy and
adversely  effect  the  market  value  of  securities  issued  by  companies  or
governments in that country.

CURRENCY RISK

The possibility that an American's foreign investment will lose money because of
unfavorable exchange rate movements.

DIVIDEND INCOME

Payment to  shareholders  of income from  interest or  dividends  generated by a
fund's investments.

DOLLAR-COST AVERAGING

Investing equal amounts of money at regular  intervals on an ongoing basis. This
technique  ensures  that an investor  buys fewer shares when prices are high and
more shares when prices are low.

EXPENSE RATIO

The  percentage  of a fund's  average net assets used to pay its  expenses.  The
expense ratio  includes  management  fees,  administrative  fees,  and any 12b-1
marketing fees.

FIXED-INCOME SECURITIES

Investments,  such as bonds, that have a fixed payment schedule. While the level
of income  offered  by these  securities  is  predetermined,  their  prices  may
fluctuate.

Growth Stock Fund

A mutual fund that  emphasizes  stocks of companies  whose  strong  earnings and
revenue potential indicate above-average  prospects for capital growth with less
emphasis on dividend income.

INTERNATIONAL STOCK FUND

A mutual fund that invests in the stocks of companies located outside the United
States.

INVESTMENT ADVISER

An  organization  that makes the  day-to-day  decisions  regarding a portfolio's
investments.

NET ASSET VALUE (NAV)

The market value of a mutual fund's total assets, minus liabilities,  divided by
the  number of shares  outstanding.  The value of a single  share is called  its
share value or share price.

PORTFOLIO DIVERSIFICATION

Holding a variety of securities so that a portfolio's  return is not hurt by the
poor performance of a single security, industry, or country.

PRINCIPAL

The amount of your own money you put into an investment.

TOTAL RETURN

A percentage change,  over a specified time period, in a mutual fund's net asset
value,  with the ending net asset value adjusted to account for the reinvestment
of all distributions of dividends and capital gains.

VALUE STOCK FUND

A mutual fund that focuses on the stocks of companies  that,  considering  their
earnings and dividends,  are  attractively  priced;  these  companies  often pay
regular dividend income to shareholders.

VOLATILITY

The  fluctuations  in value of a mutual  fund or other  security.  The greater a
fund's volatility, the wider the fluctuations between its high and low prices.

YIELD

Current income (interest or dividends)  earned by an investment,  expressed as a
percentage of the investment's price.

<PAGE>

Post Office Box 2600
Valley Forge, PA 19482

[VANGUARD SHIP LOGO]

INVESTOR INFORMATION
DEPARTMENT
1-800-662-7447 (SHIP)
TEXT TELEPHONE:
1-800-952-3335
For information on our funds,
fund services, and retirement
accounts; requests for
literature

CLIENT SERVICES DEPARTMENT
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TEXT TELEPHONE:
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For information on your
account, account transactions,
and account statements

VANGUARD BROKERAGE
SERVICES
1-800-992-8327
For information on trading
stocks, bonds, and options
at reduced commissions

VANGUARD TELE-ACCOUNT(R)
1-800-662-6273 (ON-BOARD)
For 24-hour automated access
to price and yield, information
on your account, and certain
transactions

ELECTRONIC ACCESS TO THE
VANGUARD MUTUAL FUND
EDUCATION AND INFORMATION
CENTER
World Wide Web
www.vanguard.com

E-mail
[email protected]

[COPYRIGHT] 1998 Vanguard Marketing
Corporation, Distributor

P046N
<PAGE>


VANGUARD
INTERNATIONAL VALUE
PORTFOLIO
Institutional Prospectus
April 30, 1998

A Portfolio of Vanguard/ Trustees' Equity Fund

This  prospectus  contains  financial data for the Portfolio  through the fiscal
year ended December 31, 1997.


Formerly known as Vanguard/Trustees' Equity Fund-International Portfolio

[VANGUARD LOGO]

VANGUARD INTERNATIONAL VALUE PORTFOLIO      An International Stock Mutual Fund

CONTENTS
Portfolio  Profile                                       1
Portfolio Expenses                                       2
Financial Highlights                                     3
A Word About Risk                                        4
The Portfolio's  Objectives                              4
Who Should Invest                                        4
Investment Strategy                                      5
Investment Policies                                      7
Investment Limitations                                   9
Investment  Performance                                  9
Share Price                                             10
Dividends, Capital Gains, and Taxes                     10
The Portfolio and  Vanguard                             11
Investment Adviser                                      11
General Information                                     12
Investing  with Vanguard
o  For Plan Participants                                13
o  For Other Institutional Investors                    13
Accessing Fund Information by Computer                  14
Prospectus Postscript                                   15
Investment Primer                                       16
Glossary                                 Inside Back Cover

INVESTMENT OBJECTIVES AND POLICIES

Vanguard International Value Portfolio (the "Portfolio") is a diversified mutual
fund,  a part of  Vanguard/Trustees'  Equity  Fund  (the  "Fund"),  an  open-end
investment  company.  Prior  to April  30,  1997,  the  Portfolio  was  known as
Vanguard/Trustees' Equity Fund-International Portfolio.

   The  Portfolio  seeks to provide  long-term  growth  and income by  investing
primarily in the stocks of large and medium-size  companies  located outside the
United States.  The Portfolio uses a "value"  investment  approach,  emphasizing
companies   that--considering   their   histories   and   compared   to  similar
companies--are attractively priced. These companies tend to be out of favor with
investors.

   IT IS IMPORTANT TO NOTE THAT THE  PORTFOLIO'S  SHARES ARE NOT  GUARANTEED  OR
INSURED  BY THE FDIC OR ANY  OTHER  AGENCY  OF THE U.S.  GOVERNMENT  OR  FOREIGN
GOVERNMENTS.  AS WITH ANY INVESTMENT IN COMMON STOCKS, WHICH ARE SUBJECT TO WIDE
FLUCTUATIONS  IN  MARKET  VALUE,  YOU  COULD  LOSE  MONEY  BY  INVESTING  IN THE
PORTFOLIO.

FEES AND EXPENSES

The Portfolio is offered on a no-load  basis,  which means that you pay no sales
commissions  or 12b-1  marketing  fees.  You will,  however,  incur expenses for
investment  advisory,  management,  administrative,  and distribution  services,
which are included in the expense ratio.

IMPORTANT NOTE

This prospectus is intended for  institutional  clients and for  participants in
employer-sponsored  retirement or savings plans. Another version--for  investors
who would like to open a personal investment account--can be obtained by calling
Vanguard, at 1-800-662-7447.

ADDITIONAL INFORMATION ABOUT THE PORTFOLIO


A Statement of Additional  Information  (dated April 30, 1998)  containing  more
information  about the Portfolio is, by reference,  part of this  prospectus and
may be obtained  without  charge by  contacting  Vanguard  (see back cover),  or
visiting the Securities and Exchange Commission's website (www.sec.gov).


WHY READING THIS PROSPECTUS IS IMPORTANT

This  prospectus  explains  the  objectives,  risks,  and  strategy  of Vanguard
International  Value  Portfolio.  To highlight  terms and concepts  important to
mutual fund investors, we have provided "Plain Talk" explanations along the way.
Reading the  prospectus  will help you to decide  whether the  Portfolio  is the
right investment for you. We suggest that you keep it for future reference.

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION,  NOR HAS THE SECURITIES AND EXCHANGE COMMISSION PASSED UPON
THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY
IS A CRIMINAL OFFENSE.

<PAGE>

PORTFOLIO PROFILE            Vanguard International Value Portfolio

WHO SHOULD INVEST (page 4)

   o  Investors seeking investment opportunities outside the United States.

   o  Investors  seeking  capital  growth and some income over the long term--at
      least five years.

   o  Investors   willing  to  accept  the  additional   risks  associated  with
      international investing.

WHO SHOULD NOT INVEST

   o  Investors seeking significant current income.

   o  Investors unwilling to accept significant fluctuations in share price.

RISKS OF THE PORTFOLIO (pages 4-8)

The Portfolio's  total return will fluctuate within a wide range, so an investor
could lose money over short or even extended  periods.  In addition to the risks
of U.S.  stock funds  (market  risk,  etc.),  the  Portfolio is subject to risks
associated with foreign investing. Among these are country risk (the chance that
a country's  economy will be hurt by political or financial  problems or natural
disasters) and currency risk (the chance that Americans  investing  abroad could
lose money  because  of a rise in the value of the U.S.  dollar  versus  foreign
currencies).

DIVIDENDS AND CAPITAL GAINS (page 10)

Paid  annually in December.  In  participant  accounts,  all  distributions  are
automatically reinvested.

INVESTMENT ADVISER (page 11)

UBS International Investment London Limited, London, England.

INCEPTION DATE: May 16, 1983


NET ASSETS AS OF 12/31/1997: $777 million

PORTFOLIO'S EXPENSE RATIO FOR THE YEAR ENDED 12/31/1997: 0.49%


LOADS, 12B-1 MARKETING FEES: None

NEWSPAPER ABBREVIATION: IntlVal

VANGUARD FUND NUMBER: 046

CUSIP NUMBER: 921939203

QUOTRON SYMBOL: VTRIX.Q
<TABLE>

<CAPTION>

AVERAGE ANNUAL TOTAL RETURNS--YEARS ENDED DECEMBER 31, 1997
<S>                                <C>      <C>      <C>
                                   1 YEAR   5 YEARS  10 YEARS
                                   --------------------------
Vanguard International Value
Portfolio*                          -4.6%     9.6%     7.6%
MSCI EAFE Index                      2.1     11.7      6.6
</TABLE>


QUARTERLY RETURNS (%) 1988-1997 (intended to show volatility of returns)

                                    [CHART]

IN EVALUATING  PAST  PERFORMANCE,  REMEMBER THAT IT IS NOT  INDICATIVE OF FUTURE
PERFORMANCE.  PERFORMANCE  FIGURES INCLUDE THE  REINVESTMENT OF ANY DIVIDEND AND
CAPITAL GAINS DISTRIBUTIONS.  THE RETURNS SHOWN ARE NET OF EXPENSES, BUT THEY DO
NOT REFLECT INCOME TAXES AN INVESTOR WOULD HAVE INCURRED.  NOTE,  TOO, THAT BOTH
THE  RETURN  AND  PRINCIPAL  VALUE  OF AN  INVESTMENT  WILL  FLUCTUATE  SO  THAT
INVESTORS' SHARES, WHEN REDEEMED,  MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL
COST.

                                       1

<PAGE>

PORTFOLIO EXPENSES

The examples  below are designed to help you  understand  the various  costs you
would bear, directly or indirectly, as an investor in the Portfolio.

                           PLAIN TALK ABOUT

                        THE COSTS OF INVESTING

          Costs are an  important  consideration  in choosing a mutual
          fund. That's because you, as a shareholder, pay the costs of
          operating a fund plus any transaction  costs associated with
          buying, selling, or exchanging shares. These costs can erode
          a  substantial  portion  of  the  gross  income  or  capital
          appreciation   a  fund  achieves.   Even   seemingly   small
          differences in fund expenses can, over time, have a dramatic
          impact on a fund's performance.

   As noted in this table,  you do not pay fees of any kind when you buy,  sell,
or exchange shares of the Portfolio:

SHAREHOLDER TRANSACTION EXPENSES
Sales Load Imposed on Purchases:                       None
Sales Load Imposed on Reinvested Dividends:            None
Redemption Fees:                                       None
Exchange Fees:                                         None


   The next table  illustrates the operating  expenses that you would incur as a
shareholder of the Portfolio.  These expenses are deducted from the  Portfolio's
income before it is paid to you.  Expenses include  investment  advisory fees as
well  as  the  costs  of  maintaining  accounts,  administering  the  Portfolio,
providing shareholder services, and other activities.  The expenses shown in the
table are based upon those incurred in the fiscal year ended December 31, 1997.
<TABLE>
<CAPTION>
<S>                                                       <C>            <C>

ANNUAL PORTFOLIO OPERATING EXPENSES
Management and Administrative Expenses:                                   0.26%
Investment Advisory Expenses:                                             0.15%
12b-1 Marketing Fees:                                                      None
Other Expenses
   Marketing and Distribution Costs:                        0.02%
   Miscellaneous Expenses (e.g., Taxes, Auditing):          0.06%
                                                            ----
Total Other Expenses:                                                      0.08%
                                                                           ----
    TOTAL OPERATING EXPENSES (EXPENSE RATIO):                              0.49%
</TABLE>
                                                                          ====


   The  following  example is intended to help you compare the cost of investing
in the  Portfolio  with  the  cost  of  investing  in  other  mutual  funds,  by
illustrating  the  hypothetical  expenses  that  you  would  incur  on a  $1,000
investment  over various  periods.  The example  assumes that (1) the  Portfolio
provides a return of 5% a year and (2) you redeem your  investment at the end of
each period.
<TABLE>

<CAPTION>

         -----------------------------------
<S>      <C>      <C>      <C>      <C>
         1 YEAR   3 YEARS  5 YEARS  10 YEARS
         -----------------------------------
          $5       $16      $27       $62
         -----------------------------------
</TABLE>


THIS EXAMPLE  SHOULD NOT BE CONSIDERED A  REPRESENTATION  OF ACTUAL  EXPENSES OR
PERFORMANCE  FROM THE PAST OR FOR THE FUTURE,  WHICH MAY BE HIGHER OR LOWER THAN
THOSE SHOWN.

                                PLAIN TALK ABOUT

                                 FUND EXPENSES


          All mutual funds have operating  expenses.  These  expenses,
          which are deducted from a fund's gross income, are expressed
          as a  percentage  of the net  assets of the  fund.  Vanguard
          International Value Portfolio's expense ratio in fiscal year
          1997 was 0.49%,  or $4.90 per $1,000 of average  net assets.
          The average  actively  managed  international  equity mutual
          fund had expenses in 1997 of 1.67%,  or $16.70 per $1,000 of
          average net assets, according to Lipper Analytical Services,
          which reports on the mutual fund industry.


                                  2

<PAGE>

FINANCIAL HIGHLIGHTS


The  following  financial  highlights  table  shows  the  results  for  a  share
outstanding  of the  Portfolio  for each of the fiscal years in the decade ended
December  31, 1997.  The  financial  statements  that  include  these  financial
highlights were audited by Price Waterhouse LLP,  independent  accountants.  You
should read this  information  in  conjunction  with the  Portfolio's  financial
statements and  accompanying  notes,  which appear,  along with the audit report
from Price  Waterhouse  LLP, in the  Portfolio's  most recent  annual  report to
shareholders. The annual report is incorporated by reference in the Statement of
Additional  Information  and in this  prospectus,  and contains a more  complete
discussion of the Portfolio's  performance.  You may have the report sent to you
without charge by writing to or calling Vanguard (see back cover).

   From time to time,  the  Vanguard  funds  advertise  yield  and total  return
figures. Yield is a historical measure of dividend income, and total return is a
measure of past dividend  income  (assuming  that it has been  reinvested)  plus
realized and unrealized capital appreciation  (depreciation).  Neither yield nor
total return should be used to predict the future performance of a fund.


<TABLE>
<CAPTION>

                                                                               YEAR ENDED DECEMBER  31,
                                            ----------------------------------------------------------------------------------------
<S>                                         <C>      <C>      <C>      <C>      <C>      <C>     <C>        <C>     <C>     <C>
                                             1997     1996     1995     1994     1993     1992     1991      1990    1989    1988
NET ASSET VALUE, BEGINNING OF YEAR          $27.54   $31.11   $31.48   $31.04   $24.44  $27.78   $26.58     $32.44  $28.27  $28.66
                                            ----------------------------------------------------------------------------------------

INVESTMENT OPERATIONS
   Net Investment Income                      .690      .82      .75      .55      .50     .66      .78      1.02      .82      .77
   Net Realized and Unrealized
      Gain (Loss) on Investments            (1.945)    2.20    2.185     1.08     6.91   (3.05)    1.80      (4.92)   6.22     4.41
                                            ----------------------------------------------------------------------------------------
      TOTAL FROM INVESTMENT OPERATIONS      (1.255)    3.02    2.935     1.63     7.41   (2.39)    2.58      (3.90)   7.04     5.18
- ------------------------------------------------------------------------------------------------------------------------------------
DISTRIBUTIONS
   Dividends from Net Investment Income      (.690)    (.82)    (.79)    (.56)    (.81)   (.67)    (.77)      (.95)   (.79)    (.99)
    Distributions from Realized
      Capital Gains                         (2.955)   (5.77)  (2.515)    (.63)    --      (.28)    (.61)     (1.01)  (2.08)   (4.58)
                                            ----------------------------------------------------------------------------------------
      TOTAL DISTRIBUTIONS                   (3.645)   (6.59)  (3.305)   (1.19)    (.81)   (.95)   (1.38)     (1.96)  (2.87)   (5.57)
- ------------------------------------------------------------------------------------------------------------------------------------
NET ASSET VALUE, END OF YEAR                $22.64   $27.54   $31.11   $31.48   $31.04  $24.44   $27.78     $26.58  $32.44  $28.27
====================================================================================================================================
TOTAL RETURN                                -4.58%   10.22%    9.65%    5.25%   30.49%  -8.72%    9.96%    -12.26%  25.97%  18.78%
====================================================================================================================================
RATIOS/SUPPLEMENTAL DATA
Net Assets, End of Year (Millions)          $777     $917     $988     $1,053   $982     $678     $878      $796    $646    $467
Ratio of Total Expenses to
   Average Net Assets                       0.49%    0.50%    0.47%    0.34%    0.40%    0.42%    0.38%     0.44%   0.46%   0.51%
Ratio of Net Investment Income to
   Average Net Assets                       2.36%    2.50%    2.29%    1.71%    1.76%    2.48%    2.87%     3.62%   2.61%    2.55%
Portfolio Turnover Rate                       37%      82%      47%      40%      39%      51%      46%       18%     25%      14%
Average Commission Rate Paid                $.0147   $.0582     N/A      N/A      N/A      N/A      N/A       N/A     N/A      N/A
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                PLAIN TALK ABOUT

                   HOW TO READ THE FINANCIAL HIGHLIGHTS TABLE


          The  Portfolio  (known  as the  International  Portfolio  of
          Vanguard/Trustees'  Equity Fund until April  30,1997)  began
          fiscal  1997 with a net asset  value  (price)  of $27.54 per
          share.  During the year,  the  Portfolio  earned  $0.690 per
          share from investment income (interest and dividends). There
          was  a  decline   of  $1.945  per  share  in  the  value  of
          investments  held or sold by the  Portfolio,  resulting in a
          net decline of $1.255 from  investment  operations.  In all,
          $3.645 per share was returned to shareholders in the form of
          distributions  ($0.690  in  dividends,   $2.955  in  capital
          gains).  This resulted in a share price of $22.64 at the end
          of the year,  a decrease of $4.90 per share (from  $27.54 at
          the  beginning  of the year to $22.64 at the end of the year
          ).  Assuming  that  the   shareholder   had  reinvested  the
          distribution  in the purchase of more  shares,  total return
          from the Portfolio was -4.58% for the year.

             As of December 31, 1997,  the  Portfolio had $777 million
          in net assets;  an expense  ratio of 0.49% ($4.90 per $1,000
          of net assets); and net investment income amounting to 2.36%
          of its average net assets.  It sold and replaced  securities
          valued at 37% of its total net assets.


                                       3

<PAGE>

A WORD ABOUT RISK

This  prospectus  describes  the risks you would face as an investor in Vanguard
International  Value Portfolio.  It is important to keep in mind one of the main
axioms of  investing:  The  higher  the risk of losing  money,  the  higher  the
potential reward. The reverse,  also, is generally true: The lower the risk, the
lower the potential reward.  However,  as you consider an investment in Vanguard
International  Value Portfolio,  you should also take into account your personal
tolerance for the daily fluctuations of the stock market.

   Look for this "warning flag" symbol [FLAG]  throughout the prospectus.  It is
used to mark  detailed  information  about  each  type of risk  that  you,  as a
shareholder of the Portfolio, would confront.

THE PORTFOLIO'S OBJECTIVES

Vanguard International Value Portfolio seeks to provide long-term capital growth
and income.  These objectives are  fundamental,  which means that they cannot be
changed unless a majority of shareholders vote to do so.

   [FLAG] BECAUSE OF THE SEVERAL TYPES OF RISK DESCRIBED ON THE FOLLOWING PAGES,
          YOUR  INVESTMENT IN THE  PORTFOLIO,  AS WITH ANY  INVESTMENT IN COMMON
          STOCKS, COULD LOSE MONEY.

                                PLAIN TALK ABOUT

                          INVESTING FOR THE LONG TERM

          The  Portfolio  is  intended  to be a  long-term  investment
          vehicle  and is not  designed  to provide  investors  with a
          means of speculating on short-term fluctuations in the stock
          market.

WHO SHOULD INVEST

The Portfolio may be a suitable investment for you if:

   o  You are seeking investment opportunities outside the United States.

   o  You wish to add a value-oriented international stock fund to your existing
      holdings,  which  could  include  U.S.  stock,  bond,  money  market,  and
      tax-exempt investments.

   o  You are willing to accept the additional  risks  (country  risk,  currency
      risk, etc.) associated with international investments.

   o  You are seeking growth of capital over the long term--at least five years.

   This  Portfolio is not an appropriate  investment if you are a  market-timer.
Investors  who  engage  in  excessive   in-and-out   trading  activity  generate
additional  costs  that are  borne by all of the  Portfolio's  shareholders.  To
minimize such costs, which reduce the ultimate returns achieved by you and other
shareholders, the Portfolio has adopted the following policies:

   o  The Portfolio reserves the right to reject any purchase request--including
      exchanges from other Vanguard  funds--that it regards as disruptive to the
      efficient management of the Portfolio. This could be because of the timing
      of the  investment  or because of a history  of  excessive  trading by the
      investor.

                                       4

<PAGE>

   o  There is a limit on the  number of times you can  exchange  into or out of
      the Portfolio.  If you own shares of the Portfolio as an investment option
      in an  employer-sponsored  retirement or savings plan,  your plan dictates
      the  rules  governing  exchanges.  Contact  your  plan  administrator  for
      details.

   o  The Portfolio reserves the right to stop offering shares at any time.

INVESTMENT STRATEGY

This  section  explains  how the  investment  adviser  pursues  the  Portfolio's
objectives  of  long-term  growth and income.  It also  explains  several of the
risks--market  risk,  objective risk,  country risk,  manager risk, and currency
risk--faced by investors in the  Portfolio.  Unlike the  Portfolio's  investment
objectives,  the adviser's  investment  strategy is not  fundamental  and can be
changed by the  Portfolio's  Board of  Trustees  without  shareholder  approval.
However,  before making any important change in its policies, the Portfolio will
give shareholders 30 days' notice, in writing.

                                PLAIN TALK ABOUT

                            COSTS AND MARKET-TIMING

          Some investors try to profit from "market-timing"--switching
          money into  investments when they expect prices to rise, and
          taking  money out when they  expect the  market to fall.  As
          money is  shifted  in and out, a fund  incurs  expenses  for
          buying and selling securities.  These costs are borne by all
          fund shareholders,  including the long-term investors who do
          not generate the costs. Therefore, the Portfolio discourages
          short-term  trading by,  among other  things,  limiting  the
          number of exchanges it permits.

MARKET EXPOSURE

The Portfolio is a value-oriented  fund that invests  primarily in the stocks of
large and medium-size non-U.S.  companies. Under normal circumstances,  at least
65% of the  Portfolio's  assets will be  invested in foreign  stocks in at least
three different countries.

   [FLAG] THE PORTFOLIO IS SUBJECT TO MARKET RISK, WHICH IS THE POSSIBILITY THAT
          STOCK PRICES OVERALL WILL DECLINE OVER SHORT OR EVEN EXTENDED PERIODS.
          STOCK  MARKETS  TEND TO MOVE IN CYCLES,  WITH  PERIODS OF RISING STOCK
          PRICES AND PERIODS OF FALLING STOCK PRICES.  IN ADDITION,  INVESTMENTS
          IN FOREIGN STOCK MARKETS CAN BE AS RISKY, IF NOT MORE RISKY, THAN U.S.
          STOCK INVESTMENTS.

   To illustrate the  volatility of  international  stock prices,  the following
table shows the best,  worst,  and average total returns  (dividend  income plus
change in market  value) for  foreign  stock  markets  over  various  periods as
measured by the Morgan Stanley Capital  International Europe,  Australasia,  and
Far East (MSCI EAFE)  Index,  a widely used  barometer  of  international  stock
market activity.  Note that the returns shown do not include the costs of buying
and selling  stocks or other  expenses  that a real-world  investment  portfolio
would incur. Note, also, how the gap between best and worst tends to narrow over
the long term.

                           PLAIN TALK ABOUT

                             VALUE FUNDS
                           AND GROWTH FUNDS

          Value investing and growth investing are two styles employed
          by stock fund  managers.  Value  funds  generally  emphasize
          companies  that,   considering  their  assets  and  earnings
          history,  are attractively priced; these companies often pay
          regular dividend income to shareholders.  Growth funds focus
          on companies  that, due to their strong earnings and revenue
          potential, offer above-average prospects for capital growth,
          with less  emphasis  on  dividend  income.  Value and growth
          stocks  have,  in  the  past,   produced  similar  long-term
          returns,  though each has periods  when it  outperforms  the
          other. In general, value funds are appropriate for investors
          who want some dividend  income and the potential for capital
          gains but are less  tolerant  of  share-price  fluctuations.
          Growth  funds,  by contrast,  appeal to  investors  who will
          accept  more  volatility  in hope of a greater  increase  in
          share price.

                                       5

<PAGE>

                           PLAIN TALK ABOUT

                             THE RISKS OF
                       INTERNATIONAL INVESTING

          Because foreign stock markets operate  differently  from the
          U.S. market, Americans investing abroad will encounter risks
          not typically associated with U.S. companies.  For instance,
          foreign  companies  are not subject to the same  accounting,
          auditing, and financial reporting standards and practices as
          U.S. companies;  and their stock may not be as liquid as the
          stock of similar U.S. companies. In addition,  foreign stock
          exchanges,   brokers,  and  companies  generally  have  less
          government  supervision  and  regulation  than in the United
          States. These factors, among others, could negatively impact
          the  returns   that   Americans   receive   from  a  foreign
          investment.  For  more  information,   see  the  Portfolio's
          Statement of Additional Information.
<TABLE>
<CAPTION>


- --------------------------------------------------------------------------------
                 INTERNATIONAL STOCK MARKET RETURNS (1969-1997)
- --------------------------------------------------------------------------------
<S>                      <C>          <C>          <C>          <C>
                         1 YEAR       5 YEARS      10 YEARS     20 YEARS
Best                      69.9%        36.5%         22.8%        16.3%
Worst                    -23.2          1.5           6.6         12.0
Average                   14.5         13.8          15.3         14.9
- --------------------------------------------------------------------------------
</TABLE>

   The table  covers all of the 1-,  5-,  10-,  and  20-year  periods  from 1969
through 1997.  Keep in mind that this was a  particularly  favorable  period for
foreign markets. For instance, over 10-year periods,  foreign stocks provided an
average return of 15.3%,  compared to 13.4% for U.S.  stocks (as measured by the
Standard & Poor's 500  Composite  Stock Price Index) during the same time frame.
These average returns reflect past  performance and should not be regarded as an
indication  of future  returns  from either  foreign  markets as a whole or this
Portfolio in particular.


   Note,  too,  that,  while  the  Portfolio  emphasizes  stocks  of  large  and
medium-size  companies,  it also includes stocks of small  companies.  Stocks of
small  companies have  historically  been more volatile  than--and at times have
performed quite differently from--the stocks of larger companies.  Keep in mind,
too,  that  classifications  of companies as large,  medium,  or small vary from
country to  country.  For  instance,  a large  company in one  country  could be
considered a small company in another.

   For these reasons and because Vanguard International Value Portfolio does not
hold the same  securities held in the MSCI EAFE Index or any other market index,
the  performance  of the Portfolio will not mirror the returns of any particular
index.

   [FLAG] THE PORTFOLIO IS SUBJECT TO OBJECTIVE  RISK,  WHICH IS THE POSSIBILITY
          THAT RETURNS  FROM  INTERNATIONAL  STOCKS WILL TRAIL  RETURNS FROM THE
          U.S. STOCK MARKETS.  THE PRICES OF INTERNATIONAL STOCKS AND THE PRICES
          OF U.S. STOCKS HAVE OFTEN MOVED IN OPPOSITE DIRECTIONS.  THESE PERIODS
          HAVE, IN THE PAST, LASTED FOR AS LONG AS SEVERAL YEARS.

                                PLAIN TALK ABOUT

                           PORTFOLIO DIVERSIFICATION

          In  general,  the more  diversified  a fund's  portfolio  of
          stocks,  the  less  likely  that  a  specific  stock's  poor
          performance  will hurt the  fund.  One  measure  of a fund's
          level of  diversification  is the  percentage  of total  net
          assets represented by its ten largest holdings.  The average
          foreign  equity  mutual  fund has  about  25% of its  assets
          invested   in  its  ten   largest   holdings,   while   some
          less-diversified international mutual funds have 40% or more
          of  their  assets   invested  in  the  stocks  of  just  ten
          companies.

SECURITY SELECTION


UBS International  Investment London Limited (UBSII),  adviser to the Portfolio,
believes that research is the key to selecting  securities for an  international
stock  portfolio.  Much of this research  takes the form of on-site  visits.  In
1997, for instance, UBSII's investment analysts visited some 1,600 companies.


   To be  considered  for  Vanguard  International  Value  Portfolio,  a company
must--looking  at its  history  and  compared  to  similar  companies--be  cheap
statistically  (that is, have an above-average  yield and a relatively low price
considering  its  earnings,  book value,  and cash  flow);  be out of favor with
investors;  and appear to have a management  that is motivated to make  positive
changes.

                                       6

<PAGE>

   The adviser decides whether--and how much--to invest in each country by first
determining how many of a country's companies meet UBSII's value criteria. Other
factors in UBSII's country  selection process include the size of the market and
the variety of investment opportunities available within the market.

   [FLAG] THE  PORTFOLIO IS SUBJECT TO COUNTRY  RISK,  WHICH IS THE  POSSIBILITY
          THAT  POLITICAL  EVENTS (SUCH AS A WAR),  FINANCIAL  PROBLEMS (SUCH AS
          RISING  INFLATION),  OR NATURAL DISASTERS (SUCH AS AN EARTHQUAKE) WILL
          WEAKEN A COUNTRY'S  ECONOMY AND CAUSE  INVESTMENTS  IN THAT COUNTRY TO
          LOSE MONEY.

   The Portfolio  typically holds some 150 securities,  with the top 10 holdings
making up about 20% of the Portfolio's net assets.  The stocks are chosen from a
diverse range of industries.


   The  Portfolio's  top 10 holdings (which amounted to 29.8% of the Portfolio's
net assets) as of December 31, 1997, follow.

         1. Groupe Danone SA
         2. Nestle SA (Registered)
         3. Bayer AG
         4. Elf Aquitaine SA
         5. Electrolux AB B Shares
         6. BTR PLC
         7. Allied Domecq PLC
         8. Akzo Nobel NV
         9. AXA-UAP SA
        10. BG PLC


   The  Portfolio  is run by UBSII  according to  traditional  methods of active
investment management, which means that securities are bought and sold according
to UBSII's  judgments about companies and their financial  prospects,  and about
foreign stock markets and economies in general.

   [FLAG] THE  PORTFOLIO IS SUBJECT TO MANAGER  RISK,  WHICH IS THE  POSSIBILITY
          THAT  UBSII  MAY  DO A POOR  JOB OF  EVALUATING  FOREIGN  MARKETS  AND
          SELECTING STOCKS.

PORTFOLIO TURNOVER


Although the Portfolio  generally  seeks to invest for the long term, it retains
the right to sell  securities  regardless  of how long they have been held.  The
Portfolio's  average turnover rate for the past ten years has been about 40%. (A
turnover  rate of 100% would  occur,  for  example,  if the  Portfolio  sold and
replaced  securities  valued at 100% of its total net  assets  within a one-year
period.)


                           PLAIN TALK ABOUT

                          PORTFOLIO TURNOVER


          Before  investing  in a mutual fund,  you should  review its
          portfolio  turnover  rate for an indication of the potential
          effect of transaction costs on the fund's future returns. In
          general, the greater the volume of buying and selling by the
          fund, the greater the impact that brokerage  commissions and
          other transaction costs will have on its return. The average
          turnover rate for actively managed international stock funds
          is 64%.


INVESTMENT POLICIES

Besides  investing in stocks of foreign  companies,  the  Portfolio may follow a
number of investment policies to achieve its objectives.

   The Portfolio may enter into forward foreign currency  contracts,  which help
protect the Portfolio's  securities  against  unfavorable  short-term changes in
exchange  rates.  UBSII  will  use  these  contracts  to  eliminate  some of the
uncertainty of foreign exchange  rates--but will not speculate on changes in the
market.

                                       7

<PAGE>

   [FLAG] THE PORTFOLIO IS SUBJECT TO CURRENCY  RISK,  WHICH IS THE  POSSIBILITY
          THAT A  "STRONGER"  U.S.  DOLLAR  WILL REDUCE  RETURNS  FOR  AMERICANS
          INVESTING OVERSEAS.  GENERALLY, WHEN THE DOLLAR RISES IN VALUE AGAINST
          A FOREIGN  CURRENCY,  YOUR  INVESTMENT  IN THAT  COUNTRY  LOSES  VALUE
          BECAUSE ITS CURRENCY IS WORTH FEWER U.S. DOLLARS. ON THE OTHER HAND, A
          "WEAKER"  DOLLAR  GENERALLY  LEADS TO  HIGHER  RETURNS  FOR  AMERICANS
          HOLDING FOREIGN INVESTMENTS.

   The Portfolio may also invest in derivatives.

   [FLAG] ALTHOUGH IT HAS NOT DONE SO IN THE PAST,  THE  PORTFOLIO  RESERVES THE
          RIGHT TO INVEST,  TO A LIMITED  EXTENT,  IN STOCK  FUTURES AND OPTIONS
          CONTRACTS, WHICH ARE TRADITIONAL TYPES OF DERIVATIVES.

                                PLAIN TALK ABOUT

                                FORWARD FOREIGN
                               CURRENCY CONTRACTS

          A forward foreign  currency  contract is an agreement to buy
          or sell a country's currency at a specific price usually 30,
          60, or 90 days in the future.  In other words,  the contract
          guarantees  an exchange  rate on a given  date.  Managers of
          international  stock  funds  use  these  contracts  to guard
          against sudden,  unfavorable changes in U.S.  dollar/foreign
          currency  exchange rates. The contracts will not prevent the
          fund's  securities  from  falling  in value  during  foreign
          market declines.


   Losses (or gains)  involving  futures can sometimes be  substantial--in  part
because a relatively small price movement in a futures contract may result in an
immediate and  substantial  loss (or gain) for a portfolio.  This Portfolio will
not use futures and options for speculative purposes or as leveraged investments
that magnify the gains or losses of an  investment.  Rather,  the Portfolio will
keep separate cash reserves or other liquid  portfolio  securities in the amount
of the  obligation  underlying the futures or options  contract.  Only a limited
percentage of the  Portfolio's  assets--5%--may  be applied  toward the deposits
required on futures  contracts,  and the value of all futures contracts in which
the Portfolio  acquires an interest cannot exceed 20% of the  Portfolio's  total
assets.

   The reasons for which the Portfolio will invest in futures and options are:

   o  To keep cash on hand to meet shareholder  redemptions or other needs while
      simulating full investment in stocks.

   o  To  reduce  the  Portfolio's  transaction  costs or add value  when  these
      instruments are favorably priced.


   The Portfolio will usually hold only a small percentage of its assets in cash
reserves,  although if the investment  adviser  believes that market  conditions
warrant a temporary  defensive  measure,  the  Portfolio  may hold cash reserves
without limit.

                           PLAIN TALK ABOUT

                             DERIVATIVES

          A derivative is a financial contract whose value is based on
          (or "derived" from) a traditional  security (such as a stock
          or a bond),  an asset (such as a commodity like gold),  or a
          market  index  (such  as the S&P  500  Index).  Futures  and
          options are derivatives  that have been trading on regulated
          exchanges  for more than two  decades.  These  "traditional"
          derivatives  are  standardized  contracts that can easily be
          bought and sold,  and whose market values are determined and
          published   daily.   It  is   these   characteristics   that
          differentiate  futures and options from the  relatively  new
          types  of  derivatives.   If  used  for  speculation  or  as
          leveraged  investments,  derivatives can carry  considerable
          risks.

                                       8

<PAGE>

INVESTMENT LIMITATIONS


The Portfolio has adopted limitations on some of its investment  policies.  Some
of these limitations are that the Portfolio will not:

   o  Invest more than 5% of its assets in the securities of companies that have
      been in business for less than three years.

   o  Invest more than 25% of its assets in any one industry.

   o  Borrow money,  except for temporary or emergency purposes in an amount not
      exceeding  10% of its net assets.  Whenever  the  Portfolio's  outstanding
      borrowing  is  more  than  5% of its  net  assets,  it  will  stop  making
      investments.

   With respect to 75% of its assets, this Portfolio will not:

   o  Invest more than 5% in the securities of any one company.

   o  Buy more than 10% of the outstanding voting securities of any company.

A complete list of the  Portfolio's  investment  limitations can be found in the
Statement of Additional  Information.  These limitations are fundamental and may
be changed only by approval of a majority of the Portfolio's shareholders.


                           PLAIN TALK ABOUT

                            CASH RESERVES

          With mutual funds,  holding cash  reserves--or  "cash"--does
          not mean  literally that the fund holds a stack of currency.
          Rather, cash reserves refer to short-term,  interest-bearing
          securities  that can easily and quickly be converted to cash
          as described in the prospectus glossary.  (Most mutual funds
          hold at  least  a  small  percentage  of  assets  in cash to
          accommodate  shareholder  redemptions.)  While  some  equity
          funds  strive to keep cash levels at a minimum and to always
          remain  fully  invested in stocks,  other equity funds allow
          investment  advisers  to hold up to 20% or more of a  fund's
          assets in cash reserves.

INVESTMENT PERFORMANCE

Vanguard  International  Value  Portfolio  invests  in  foreign  stocks,  so its
performance is tied to the  performance of many stock markets outside the United
States. Historically,  stock market performance,  both foreign and domestic, has
been  characterized  by sharp  up-and-down  swings in the short term and by more
stable growth over the long term.

<TABLE>
<CAPTION>


                          AVERAGE ANNUAL TOTAL RETURNS
                       FOR YEARS ENDED DECEMBER 31, 1997
<S>                                         <C>        <C>       <C>   

                                            1 YEAR     5 YEARS   10 YEARS
Vanguard International Value Portfolio*      -4.6%       9.6%      7.6%
MSCI EAFE Index                               2.1%      11.7%      6.6%
</TABLE>



*Formerly known as Vanguard/Trustees' Equity Fund-International Portfolio.

The results shown above represent the Portfolio's  "average annual total return"
performance, which assumes that any distributions of capital gains and dividends
were  reinvested  for  the  indicated  periods.  Also  included  is  comparative
information  on the  unmanaged  Morgan  Stanley  Capital  International  Europe,
Australasia,  and Far  East  (MSCI  EAFE)  Index.  The  chart  does not make any
allowance for federal,  state, or local income taxes that  shareholders must pay
on a current basis.

                           PLAIN TALK ABOUT

                           PAST PERFORMANCE

          Whenever you see information on a fund's performance, do not
          consider the figures to be an indication of the  performance
          you could expect by making an  investment in the fund today.
          The past is an imperfect  guide to the future;  history does
          not repeat  itself in neat,  predictable  patterns.  This is
          particularly   true   of   international    markets,   which
          historically have been more volatile than U.S. markets.

                                       9

<PAGE>

   In weighing these performance figures, note that Vanguard International Value
Portfolio  was managed by  Batterymarch  Financial  Management,  Inc.,  from the
Portfolio's  inception  on  May  16,  1983,  until  March  31,  1996,  when  UBS
International  Investment  London  Limited  became  the  Portfolio's  investment
adviser.

SHARE PRICE


The Portfolio's  share price,  called its net asset value, or NAV, is calculated
each  business  day after the close of trading  on the New York Stock  Exchange,
generally 4 p.m. Eastern time. Net asset value per share is calculated by adding
up the total assets of the Portfolio,  subtracting  all of its  liabilities,  or
debts, and then dividing by the total number of Portfolio shares outstanding:


                                 TOTAL ASSETS   -   LIABILITIES
         NET ASSET VALUE =      --------------------------------
                                  NUMBER OF SHARES OUTSTANDING

   The daily net asset value is useful to you as a shareholder  because the NAV,
multiplied  by the  number of  Portfolio  shares  you own,  gives you the dollar
amount  you would  have  received  had you sold all of your  shares  back to the
Portfolio that day.

   To help determine its daily share price,  the Portfolio  calculates the value
of its foreign securities in U.S. dollars. The Portfolio uses the daily exchange
rate employed by Morgan Stanley Capital  International in the calculation of its
own indexes.  If Morgan Stanley's exchange rate is not available,  the Portfolio
uses a rate according to policies set by the Fund's Board of Trustees.


   The Portfolio's share price can be found daily in the mutual fund listings of
most major newspapers under the heading "Vanguard  Funds." Different  newspapers
use different  abbreviations  of the  Portfolio's  name,  but the most common is
INTLVAL.  (Note  that,  prior to April  30,  1997,  the  Portfolio  was known as
Vanguard/Trustees'  Equity   Fund-International   Portfolio,  with  a  newspaper
abbreviation of TRINTL.)


                           PLAIN TALK ABOUT

                            DISTRIBUTIONS

          As a  shareholder,  you are  entitled  to your  share of the
          fund's  income from interest and  dividends,  and gains from
          the sale of investments. You receive such earnings as either
          an income  dividend or capital  gains  distribution.  Income
          dividends  come from the dividends  that the fund earns from
          its holdings as well as interest it receives  from its money
          market  and bond  investments.  Capital  gains are  realized
          whenever the fund sells securities for higher prices than it
          paid for them. These capital gains are either  short-term or
          long-term  depending on whether the fund held the securities
          for less than or more than one year.

DIVIDENDS, CAPITAL GAINS, AND TAXES

Each December,  the Portfolio  distributes to shareholders  virtually all of its
income from interest and  dividends as well as any capital  gains  realized from
the sale of securities.  In addition, the Portfolio may occasionally be required
to make supplemental  dividend or capital gains distributions at some other time
during the year.

   If  you  own  shares  of  the  Portfolio  as  an  investment   option  in  an
employer-sponsored  retirement or savings plan, these dividend and capital gains
distributions  will be reinvested in additional  Portfolio shares and accumulate
on a tax-deferred basis. You will not owe taxes on these distributions until you
begin  withdrawals.  You should  consult  your plan  administrator,  your plan's
Summary Plan  Document,  or your tax adviser  about the tax  consequences  of an
investment in the Portfolio and of any plan withdrawals.

                                       10

<PAGE>

   If your Vanguard  International Value Portfolio  investment is not part of an
employer-sponsored  plan,  you can  receive  distributions  of income or capital
gains in cash, or you may have them automatically invested in more shares of the
Portfolio.  Both dividend and capital gains  distributions--whether  received in
cash or reinvested in  additional  shares--are  subject to federal (and possibly
state and local)  income  taxes,  no matter how long you have held the shares in
the Portfolio.  You should consult your tax adviser about other tax consequences
of an investment in the Portfolio.

THE PORTFOLIO AND VANGUARD


Vanguard  International Value Portfolio of  Vanguard/Trustees'  Equity Fund is a
member of The Vanguard Group, a family of more than 30 investment companies with
more than 95 distinct  investment  portfolios  and total net assets of more than
$360 billion.  All of the Vanguard funds share in the expenses  associated  with
business  operations,   such  as  personnel,   office  space,   equipment,   and
advertising.


   Vanguard also provides marketing services to the funds. Although shareholders
do not pay  sales  commissions  or 12b-1  marketing  fees,  each  fund  pays its
allocated share of The Vanguard Group's costs.

   A list of the Fund's Trustees and officers,  and their present  positions and
principal  occupations during the past five years, can be found in the Statement
of Additional Information.

                           PLAIN TALK ABOUT

                VANGUARD'S UNIQUE CORPORATE STRUCTURE

          The Vanguard  Group,  Inc.,  is the only MUTUAL  mutual fund
          company. It is owned jointly by the funds it oversees and by
          the  shareholders  in those  funds.  Other  mutual funds are
          operated  by  for-profit  management  companies  that may be
          owned  by one  person,  by a  group  of  individuals,  or by
          investors  who  bought  the  management  company's  publicly
          traded stock.  Because of its structure,  Vanguard  operates
          its funds at cost.  Instead  of  distributing  profits  from
          operations  to  a  separate  management  company,   Vanguard
          returns  profits to fund  shareholders  in the form of lower
          operating expenses.

INVESTMENT ADVISER

The Portfolio  employs UBS  International  Investment  London  Limited  (UBSII),
Triton Court, 14 Finsbury  Square,  London EC2A 1PD, as its investment  adviser.
UBSII manages the Portfolio  subject to the control of the Trustees and officers
of the Fund.

   UBSII's  advisory fee is calculated at the end of each fiscal  quarter and is
based on the Portfolio's average month-end net assets during that quarter:
<TABLE>
<CAPTION>

               -------------------------------------
              <S>                        <C>
               AVERAGE NET ASSETS         ANNUAL FEE
               -------------------------------------
               First $50 million            0.475%
               Next $450 million            0.150
               Next $500 million            0.120
               Assets over $1 billion       0.110
               -------------------------------------
</TABLE>

The advisory fee may be  increased  or  decreased by an  incentive/  penalty fee
based on the  Portfolio's  total return  performance  as compared to that of the
MSCI EAFE  Index.  Under the fee  schedule,  the basic fee may be  increased  or
decreased  by as  much as 50%.  The  incentive/penalty  fee  will  not be  fully
operable until June 30, 1999. Until that date, the incentive/penalty fee will be
calculated using certain transition rules that are explained in the Statement of
Additional Information.

                           PLAIN TALK ABOUT

                       THE PORTFOLIO'S ADVISER


          UBS  International  Investment London Limited (UBSII) traces
          its roots to the British  brokerage  firm,  Phillips & Drew,
          which was acquired by the Union Bank of Switzerland in 1985.
          UBSII,   which  was  created  two  years  later  to  provide
          investment management services to clients outside the United
          Kingdom,  currently  manages  some $7.9  billion  in assets.
          Although the adviser uses a team approach, the managers with
          primary  responsibility  for  Vanguard  International  Value
          Portfolio are:

             WILSON PHILLIPS,  CFA, Investment Manager;  has worked in
          investment  management  since  1980;  with UBSII since 1987;
          B.S., Glasgow University.

             ROBIN APPS,  Investment Manager and Investment  Committee
          Member; has worked in investment management since 1984; with
          UBSII since 1986; B. Soc. SC., Birmingham University.


                                       11

<PAGE>


   For the year ended  December  31,  1997,  the  advisory  fee  represented  an
effective annual basic rate of 0.15% of the Portfolio's average net assets, with
no adjustment required based on performance.


   The  agreement  authorizes  UBSII to choose  brokers or dealers to handle the
purchases  and sales of the  Portfolio's  securities,  and directs  UBSII to use
every effort to get the best available  price and most favorable  execution from
these  brokers  with  respect to all  transactions.  At times,  UBSII may choose
brokers  who charge  higher  commissions  in the  interest of  obtaining  better
execution  of a  transaction.  If more  than  one  broker  can  obtain  the best
available  price  and  favorable  execution  of a  transaction,  then  UBSII  is
authorized  to choose a broker who, in addition to  executing  the  transaction,
will provide research  services to UBSII or the Portfolio.  However,  UBSII will
not pay higher  commissions  specifically for the purpose of obtaining  research
services.  The Portfolio may direct UBSII to use a particular broker for certain
transactions in exchange for commission rebates or research services provided to
the Portfolio.

   The Fund's Board of Trustees may,  without prior approval from  shareholders,
change the terms of the  advisory  agreement or hire a new  investment  adviser,
either as a replacement for UBSII or as an additional adviser.  However, no such
change would be made before giving shareholders 30 days' notice, in writing.

GENERAL INFORMATION

Vanguard   International   Value   Portfolio  is  one  of  two   Portfolios   of
Vanguard/Trustees'  Equity  Fund,  a  Pennsylvania  business  trust.  The  other
Portfolio is the U.S. Portfolio.  The Portfolios are combined under one business
trust for  administrative  purposes,  but in virtually all respects operate like
separate business trusts.

   Shareholders  of  Vanguard  International  Value  Portfolio  have  rights and
privileges  similar to those  enjoyed by corporate and trust  shareholders.  For
example,  shareholders will not be responsible for any liabilities of the trust.
If any  matters  are to be voted  on by  shareholders  (such  as a  change  in a
fundamental  investment  objective  or the  election  of  Trustees),  each share
outstanding  at that point would be entitled to one vote.  Annual  meetings will
not be held by the Portfolio except as required by the Investment Company Act of
1940.  A meeting  will be  scheduled  to vote on the removal of a Trustee if the
holders of at least 10% of the Portfolio's shares request a meeting in writing.

"Standard & Poor's 500," "S&P  500(R),"  "Standard &  Poor's(R),"  "S&P(R)," and
"500" are trademarks of The McGraw-Hill Companies, Inc.

                                       12

<PAGE>

INVESTING WITH VANGUARD

FOR PLAN PARTICIPANTS

Vanguard   International  Value  Portfolio  is  an  investment  option  in  your
retirement or savings plan. Your plan  administrator  or your employee  benefits
office can provide you with detailed  information  on how to participate in your
plan and how to elect the Portfolio as an investment option.

   o  If you have any questions  about the Portfolio or Vanguard,  including the
      Portfolio's investment objectives,  strategy, or risks, contact Vanguard's
      Participant Services Center, toll-free, at 1-800-523-1188.

   o  If you have questions about your account,  contact your plan administrator
      or the organization that provides recordkeeping services for your plan.

INVESTMENT OPTIONS AND ALLOCATIONS

Your  plan's  specific  provisions  may  allow  you to  change  your  investment
selections,  the amount of your  contributions,  or how your  contributions  are
allocated  among the  investment  choices  available  to you.  Contact your plan
administrator or employee benefits office for more details.

TRANSACTIONS

Contributions, exchanges, or redemptions of the Portfolio's shares are processed
as soon as they have been  received by Vanguard in good order.  Good order means
that your request includes complete information on your contribution,  exchange,
or redemption, and that Vanguard has received the appropriate assets.

EXCHANGES


The exchange  privilege (your ability to redeem shares from one fund to purchase
shares of another  fund) may be available to you through your plan.  Although we
make every  effort to maintain  the exchange  privilege,  Vanguard  reserves the
right to revise or  terminate  the  exchange  privilege,  limit the amount of an
exchange, or reject any exchange, at any time, without notice. Because excessive
exchanges can  potentially  disrupt the management of the Portfolio and increase
its transaction  costs,  Vanguard  limits  exchange  activity to TWO SUBSTANTIVE
EXCHANGE  REDEMPTIONS  (at least 30 days  apart) from the  Portfolio  during any
12-month  period.  "Substantive"  means  either a dollar  amount  or  series  of
movements  between  Vanguard  funds  that  Vanguard  determines,   in  its  sole
discretion,  could have an adverse impact on the management of the Portfolio. In
addition,  certain  investment  options,  particularly  funds made up of company
stock or investment  contracts,  may be subject to unique restrictions.  Contact
your plan  administrator for details on the exchange policies that apply to your
plan.

   Before making an exchange, you should consider the following:

   o  Before you exchange to another  Vanguard fund  available in your plan, you
      should  read  that  fund's  prospectus.   Contact  Vanguard's  Participant
      Services Center, toll-free, at 1-800-523-1188 for a copy.


   o  Vanguard can accept  exchanges  only as permitted by your plan.  Your plan
      administrator can explain how frequently exchanges are allowed.

FOR OTHER INSTITUTIONAL INVESTORS

If you have questions about Vanguard  International  Value Portfolio,  including
how to establish an account, call Vanguard, toll-free, at 1-800-523-1036.

   If you have  questions  about an  existing  account,  contact  your  Vanguard
account administrator.

                                       13

<PAGE>

INVESTING WITH VANGUARD (continued)

TRANSACTIONS


Purchases,  exchanges, or redemptions of the Portfolio's shares are processed as
soon as they have been received by Vanguard in good order. Good order means that
your request  includes  complete  information  on your  purchase,  exchange,  or
redemption,  and that Vanguard has received the appropriate assets. The price of
shares bought,  exchanged,  or sold will be the Portfolio's  next-determined net
asset value after Vanguard has processed your request, provided your request has
been  received  before  the  close of  trading  on the New York  Stock  Exchange
(generally 4 p.m. Eastern time).


   Vanguard must consider the  interests of all  Portfolio  shareholders  and so
reserves the right to:

   O  Delay or reject any  purchase  or  exchange  request  that may disrupt the
      Portfolio's operation or performance.

   O  Revise or  terminate  the  exchange  privilege  or limit the  amount of an
      exchange, at any time, without notice.

   O  Take up to seven days to deliver your redemption proceeds.

   O  Pay redemption  proceeds--in  whole or in  part--through a distribution in
      kind of readily marketable securities.

ACCESSING FUND INFORMATION BY COMPUTER


VANGUARD ONLINE(R)         Use your personal computer to learn more about
www.vanguard.com           Vanguard's funds and services; keep in touch with
                           your Vanguard accounts; map out a long-term
                           investment strategy; initiate certain transactions;
                           and ask questions, make suggestions, and send
                           messages to Vanguard.

                           Our education-oriented website provides timely news
                           and information about Vanguard's funds and services;
                           an online "university" that offers a variety of
                           mutual fund classes; and easy-to-use, interactive
                           tools to help you create your own investment and
                           retirement strategies.


                                       14

<PAGE>

PROSPECTUS POSTSCRIPT

This  prospectus  is designed to provide you with  pertinent  information  about
Vanguard  International  Value Portfolio,  including its investment  objectives,
risks,  strategy,  and  expenses,  as well  as  services  available  to you as a
shareholder.

   It is  important  that you  understand  these  facts  so that you can  decide
whether an investment in the Portfolio is right for you. The following questions
offer a quick review of some of the subjects covered by this prospectus.

IN READING THE PROSPECTUS, DID YOU LEARN:

   o  The Portfolio's objectives? (page 4)

   o  The Portfolio's investment strategy? (page 5)

   o  Who should invest in the Portfolio? (page 4)

   o  The risks associated with the Portfolio? (pages 4-8)

   o  Whether the Portfolio is federally insured? (inside front cover)

   o  The Portfolio's expenses? (page 2)

   o  The background of the Portfolio's investment manager? (page 11)

                           PLAIN TALK ABOUT

                       KEEPING YOUR PROSPECTUS

          Reading  this  prospectus  will help you to  decide  whether
          Vanguard  International Value Portfolio is suitable for your
          investment  goals. If you decide to invest,  don't throw the
          prospectus  out;  you  will  no  doubt  need  it for  future
          reference.

                                       15

<PAGE>

AN INVESTMENT PRIMER

Whether you are investing for the short or long term, keep these three points in
mind:

1. INVEST IN ALL THREE OF THE MAJOR ASSET CLASSES.

Most people use a combination of . . .

   o  Stocks,  which are  considered  the "riskiest" of the three asset classes.
      Day to day, or even year to year,  stocks tend to have wide price  swings.
      Despite this potential for significant price fluctuation,  however, stocks
      have  historically  offered  higher  returns  than the other  major  asset
      classes over longer periods.

   o  Bonds,  which are chiefly  influenced by changes in interest  rates.  When
      interest rates climb,  bond prices drop;  when interest  rates fall,  bond
      prices rise.

   o  Cash reserves,  which offer more  share-price (or capital)  stability than
      stocks or  bonds--but  also  generate  lower  returns.  Some  examples are
      Treasury bills and money market funds.

2. REMEMBER THAT SAFETY HAS A PRICE.

Many people want a "no-risk" investment.  Remember, though, that the more safety
you seek, the less potential  reward you can expect--and the less you can expect
in returns  after  inflation.  Inflation  affects not only the price you pay for
goods and services; it also eats away at your investment returns over time. What
is left is known as your "real"  return--the actual return you receive after you
factor in inflation (see the chart at left).

3. CHANCES ARE GOOD THAT YOU CAN AFFORD TO TAKE MORE RISK.

As the chart shows,  inflation cuts into the returns of all three asset classes.
However,  stocks and bonds have had an easier time of outpacing  inflation  over
time--which  means  that,  to beat  inflation,  you  may  need  to  invest  more
aggressively.

   Don't be put off by  potential  downswings  in the value of your  investment,
especially if you are investing for long periods. Time acts as a shock absorber,
letting you ride out the short-term  bumps that investments  often provide.  The
longer  you hold an  investment,  the  more  likely  it is that you will  earn a
positive return.

                                PLAIN TALK ABOUT

                               INFLATION AND YOUR
                                  INVESTMENTS

          No matter how you invest your money,  inflation--the  rising
          cost of  living--is  a  constant  threat to your  investment
          returns.  The chart below shows how stocks,  bonds, and cash
          reserves have fared against inflation over time.

                        INFLATION'S EFFECT ON
                          INVESTMENT RETURNS
                             (1926-1997)

                               [CHART]

          Source: [COPYRIGHT] Stocks, Bonds, Bills, and Inflation 1998
          Yearbook(TM), Ibbotson Associates, Chicago (annually updates
          work by Roger G. Ibbotson and Rex A. Sinquefield). Used with
          permission. All rights reserved.

                                       16

<PAGE>

GLOSSARY OF INVESTMENT TERMS

CAPITAL GAINS DISTRIBUTION

Payment  to  mutual  fund  shareholders  of gains  realized  during  the year on
securities that the fund has sold at a profit, minus any realized losses.

CASH RESERVES

Cash reserves as well as short-term  bank  deposits,  money market  instruments,
U.S. Treasury bills, bank certificates of deposit (CDs),  repurchase agreements,
commercial paper, and banker's acceptances.

COMMON STOCK

A security  representing  ownership  rights in a  corporation.  A stockholder is
entitled  to share in the  company's  profits,  some of which may be paid out as
dividends.

COUNTRY RISK

The  possibility  that  events  such as  changes  in  regulation,  political  or
financial  troubles,  or natural  disasters will weaken a country's  economy and
adversely  effect  the  market  value  of  securities  issued  by  companies  or
governments in that country.

CURRENCY RISK

The possibility that an American's foreign investment will lose money because of
unfavorable exchange rate movements.

DIVIDEND INCOME

Payment to  shareholders  of income from  interest or  dividends  generated by a
fund's investments.

DOLLAR-COST AVERAGING

Investing equal amounts of money at regular  intervals on an ongoing basis. This
technique  ensures  that an investor  buys fewer shares when prices are high and
more shares when prices are low.

EXPENSE RATIO

The  percentage  of a fund's  average net assets used to pay its  expenses.  The
expense ratio  includes  management  fees,  administrative  fees,  and any 12b-1
marketing fees.

FIXED-INCOME SECURITIES

Investments,  such as bonds, that have a fixed payment schedule. While the level
of income  offered  by these  securities  is  predetermined,  their  prices  may
fluctuate.

GROWTH STOCK FUND

A mutual fund that  emphasizes  stocks of companies  whose  strong  earnings and
revenue potential indicate above-average  prospects for capital growth with less
emphasis on dividend income.

INTERNATIONAL STOCK FUND

A mutual fund that invests in the stocks of companies located outside the United
States.

INVESTMENT ADVISER

An  organization  that makes the  day-to-day  decisions  regarding a portfolio's
investments.

NET ASSET VALUE (NAV)

The market value of a mutual fund's total assets, minus liabilities,  divided by
the  number of shares  outstanding.  The value of a single  share is called  its
share value or share price.

PORTFOLIO DIVERSIFICATION

Holding a variety of securities so that a portfolio's  return is not hurt by the
poor performance of a single security, industry, or country.

PRINCIPAL

The amount of your own money you put into an investment.

TOTAL RETURN

A percentage change,  over a specified time period, in a mutual fund's net asset
value,  with the ending net asset value adjusted to account for the reinvestment
of all distributions of dividends and capital gains.

VALUE STOCK FUND

A mutual fund that focuses on the stocks of companies  that,  considering  their
earnings and dividends,  are  attractively  priced;  these  companies  often pay
regular dividend income to shareholders.

VOLATILITY

The  fluctuations  in value of a mutual  fund or other  security.  The greater a
fund's volatility, the wider the fluctuations between its high and low prices.

YIELD

Current income (interest or dividends)  earned by an investment,  expressed as a
percentage of the investment's price.

<PAGE>

[VANGUARD SHIP LOGO]

Institutional Division
Post Office Box 2900
Valley Forge, PA 19482

FOR PARTICIPANTS IN
EMPLOYER-SPONSORED PLANS


PARTICIPANT SERVICES
CENTER
1-800-523-1188
TEXT TELEPHONE:
1-800-523-8004
For information on the
Vanguard funds in your plan,
Monday through Friday,
8:30 a.m. to 9 p.m.,
Eastern time


FOR OTHER INSTITUTIONAL
INVESTORS
1-800-523-1036
For information on Vanguard
funds and services


ELECTRONIC ACCESS TO THE
VANGUARD MUTUAL FUND
EDUCATION AND INFORMATION
CENTER
World Wide Web
www.vanguard.com


E-mail
[email protected]

[COPYRIGHT] 1998 Vanguard Marketing
Corporation, Distributor

I046N
<PAGE>


                                     PART B

                         VANGUARD/TRUSTEES' EQUITY FUND

                       STATEMENT OF ADDITIONAL INFORMATION


                               April 30, 1998



   This Statement is not a prospectus but should be read in conjunction with the
Fund's  Prospectus  dated April 30, 1998. To obtain the Prospectus,  please call
the Investor Information Department:

                                 1-800-662-7447

                                TABLE OF CONTENTS

                                                                            Page

   Investment Objective and Policies.....................................    B-1
   Share Price...........................................................    B-5
   Purchase of Shares....................................................    B-6
   Redemption of Shares..................................................    B-6
   Yield and Total Return................................................    B-7
   Investment Limitations................................................    B-7
   Management of the Fund................................................    B-8
   Investment Advisory Services..........................................   B-11
   Portfolio Transactions................................................   B-14
   Performance Measures..................................................   B-15
   General Information...................................................   B-17
   Financial Statements..................................................   B-18


                        INVESTMENT OBJECTIVE AND POLICIES

   
The following  policies  supplement  the  investment  objective and policies set
forth in each Portfolio's Prospectus:
    



   Foreign  Investments.  Under normal  circumstances,  at least 65% of Vanguard
International  Value Portfolio's  assets will be invested in foreign stocks. The
Portfolio  will  invest in at least  three  different  countries  outside of the
United States.  Investors should  recognize that investing in foreign  companies
involves certain special  considerations which are not typically associated with
investing  in  U.S.  companies.  Since  the  stocks  of  foreign  companies  are
frequently  denominated in foreign currencies,  and since Vanguard International
Value  Portfolio may temporarily  hold  uninvested  reserves in bank deposits in
foreign  currencies,  the Portfolio will be affected favorably or unfavorably by
changes in currency  rates and in exchange  control  regulations,  and may incur
costs in connection with conversions between various currencies.  The investment
policies  of  Vanguard  International  Value  Portfolio  permit it to enter into
forward foreign  currency  exchange  contracts in order to hedge the Portfolio's
holdings and commitments  against changes in the level of future currency rates.
Such contracts  involve an obligation to purchase or sell a specific currency at
a future date at a price set at the time of the contract.

   As  foreign  companies  are not  generally  subject  to  uniform  accounting,
auditing and financial  reporting  standards  and practices  comparable to those
applicable  to  domestic  companies,   there  may  be  less  publicly  available
information  about certain  foreign  companies  than about  domestic  companies.
Securities of some foreign companies are generally less liquid and more volatile
than  securities  of  comparable  domestic  companies.  There is generally  less
government  supervision  and regulation of stock  exchanges,  brokers and listed
companies  than in the  U.S.  In  addition,  with  respect  to  certain  foreign
countries,  there is the possibility of expropriation or confiscatory  taxation,
political or social instability,  or diplomatic  developments which could affect
U.S. investments in those countries.

   Although Vanguard International Value Portfolio will endeavor to achieve most
favorable  execution costs in its portfolio  transactions,  fixed commissions on
many foreign stock exchanges are generally higher than negotiated commissions on
U.S.  exchanges.  In addition,  it is expected  that the expenses for  custodian
arrangements of the Portfolio's foreign securities will be somewhat greater than
the expenses for the custodian  arrangements  for handling the U.S.  Portfolio's
securities of equal value.

                                      B-1
<PAGE>

   Certain  foreign  governments  levy  withholding  taxes against  dividend and
interest  income.  Although  in some  countries  a  portion  of these  taxes are
recoverable,  the non-recovered portion of foreign withholding taxes will reduce
the income received from the companies  comprising Vanguard  International Value
Portfolio.

   Futures Contracts. Each Portfolio may enter into futures contracts,  options,
options on futures  contracts and foreign currency futures contracts for several
reasons: to maintain cash reserves while remaining fully invested, to facilitate
trading,  to reduce transaction costs, or to seek higher investment returns when
a futures  contract  is priced  more  attractively  than the  underlying  equity
security or index.  Futures  contracts  provide for the future sale by one party
and purchase by another party of a specified amount of a specific  security at a
specified  future time and at a specified  price.  Futures  contracts  which are
standardized as to maturity date and underlying  financial instrument are traded
on national futures exchanges. Futures exchanges and trading are regulated under
the Commodity Exchange Act by the Commodity Futures Trading Commission ("CFTC"),
a U.S.  Government  Agency.  Assets  committed  to  futures  contracts  will  be
segregated at the Fund's custodian bank to the extent required by law.

   Although  futures  contracts  by their  terms  call for  actual  delivery  or
acceptance of the underlying securities,  in most cases the contracts are closed
out before the settlement date without the making or taking of delivery. Closing
out an open futures position is done by taking an opposite position  ("buying" a
contract  which has  previously  been  "sold,"  "selling" a contract  previously
purchased)  in an  identical  contract  to  terminate  the  position.  Brokerage
commissions are incurred when a futures contract is bought or sold.

   Futures  traders are required to make a good faith margin  deposit in cash or
government  securities  with a broker or custodian to initiate and maintain open
positions  in  futures  contracts.  A  margin  deposit  is  intended  to  assure
completion of the contract  (delivery or acceptance of the underlying  security)
if it is not terminated  prior to the specified  delivery date.  Minimal initial
margin  requirements are established by the futures exchange and may be changed.
Brokers may establish  deposit  requirements  which are higher than the exchange
minimums.  Futures  contracts  are  customarily  purchased  and  sold on  margin
deposits  that may range  upward from less than 5% of the value of the  contract
being traded.

   After a futures  contract  position is opened,  the value of the  contract is
marked to market daily. If the futures contract price changes to the extent that
the  margin  on  deposit  does  not  satisfy  margin  requirements,  payment  of
additional  "variation"  margin  will be  required.  Conversely,  change  in the
contract  value may reduce the  required  margin,  resulting  in a repayment  of
excess margin to the contract holder.  Variation margin payments are made to and
from the futures broker for as long as the contract remains open. The Portfolios
expect to earn interest income on their margin deposits.

   The Portfolios will not use futures and options for speculative  purposes.  A
Portfolio will use futures and options to simulate full investment in underlying
securities while retaining a cash balance for fund management purposes.


   Regulations  of the  CFTC  applicable  to the  Fund  require  that all of its
futures  transactions  constitute bona fide hedging  transactions  except to the
extent that the aggregate initial margins and premiums required to establish any
non-hedging  positions  do not  exceed  five  percent of the value of the Fund's
portfolio. Each Portfolio will only sell futures contracts to protect securities
it owns  against  price  declines or purchase  contracts  to protect  against an
increase in the price of securities it intends to purchase.  As evidence of this
hedging interest,  each Portfolio expects that  approximately 75% of its futures
contract  purchases will be "completed";  that is, equivalent amounts of related
securities will have been purchased or are being purchased by the Portfolio upon
sale of open futures contracts.

   Although  techniques  other than the sale and  purchase of futures  contracts
could  be  used  to  control  the  exposure  of   Portfolio   income  to  market
fluctuations,  the use of futures  contracts  may be a more  effective  means of
hedging this exposure.  While the Portfolios will incur  commission  expenses in
both  opening  and closing  out  futures  positions,  these costs are lower than
transaction  costs  incurred  in  the  purchase  and  sale  of  U.S.  Government
securities.

                                      B-2
<PAGE>

   Restrictions on the Use of Futures Contracts. A Portfolio will not enter into
futures contract transactions to the extent that,  immediately  thereafter,  the
sum of its initial margin  deposits on open  contracts  exceeds 5% of the market
value of the Portfolio's total assets.  In addition,  a Portfolio will not enter
into  futures  contracts  to the  extent  that its  outstanding  obligations  to
purchase  securities  under these  contracts would exceed 20% of the Portfolio's
total assets.

   
   Risk Factors in Futures  Transactions.  Positions in futures contracts may be
closed  out only on an  exchange  which  provides  a  secondary  market for such
futures.  However, there can be no assurance that a liquid secondary market will
exist for any particular futures contract at any specific time. Thus, it may not
be  possible  to  close a  futures  position.  In the  event  of  adverse  price
movements, a Portfolio would continue to be required to make daily cash payments
to  maintain  its  required  margin.  In such  situations,  if a  Portfolio  has
insufficient cash, it may have to sell portfolio securities to meet daily margin
requirements at a time when it may be disadvantageous  to do so. In addition,  a
Portfolio  may be  required  to  make  delivery  of the  instruments  underlying
interest  rate futures  contracts it holds.  The  inability to close options and
futures  positions  also  could  have  an  adverse  impact  on  the  ability  to
effectively hedge its portfolio. A Portfolio will minimize the risk that it will
be  unable  to close  out a  futures  contract  by only  entering  into  futures
contracts  which are traded on national  futures  exchanges  and for which there
appears to be a liquid secondary market.
    


   The risk of loss in  trading  futures  contracts  in some  strategies  can be
substantial,  due both to the low margin  deposits  required,  and the extremely
high degree of leverage  involved in futures pricing.  As a result, a relatively
small  price  movement  in a  futures  contract  may  result  in  immediate  and
substantial loss (as well as gain) to the investor.  For example, if at the time
of purchase,  10% of the value of the futures contract is deposited as margin, a
subsequent  10% decrease in the value of the futures  contract would result in a
total  loss of the margin  deposit,  before any  deduction  for the  transaction
costs,  if the account  were then closed out. A 15%  decrease  would result in a
loss equal to 150% of the original  margin  deposit if the contract  were closed
out.  Thus,  a purchase  or sale of a futures  contract  may result in losses in
excess of the amount  invested  in the  contract.  However,  because the futures
strategies  of the  Portfolios  are  engaged in only for hedging  purposes,  the
Advisers do not  believe  that the  Portfolios  are subject to the risks of loss
frequently  associated with futures  transactions.  A Portfolio would presumably
have sustained  comparable  losses if, instead of the futures  contract,  it had
invested in the underlying security and sold it after the decline.

   Utilization of futures  transactions  by a Portfolio does involve the risk of
imperfect or no correlation  where the securities  underlying  futures contracts
have different maturities than the portfolio securities being hedged. It is also
possible  that a Portfolio  could both lose money on futures  contracts and also
experience  a decline in value of its  portfolio  securities.  There is also the
risk of loss by a Portfolio of margin  deposits in the event of  bankruptcy of a
broker with whom the  Portfolio  has an open  position in a futures  contract or
related  option.  Additionally,  investments  in futures  contracts  and options
involve risk that the investment  advisers will incorrectly predict stock market
and interest rate trends.

   Most futures  exchanges limit the amount of fluctuation  permitted in futures
contract  prices during a single  trading day. The daily limit  establishes  the
maximum  amount that the price of a futures  contract may vary either up or down
from the previous day's settlement  price at the end of a trading session.  Once
the daily limit has been reached in a particular type of contract, no trades may
be made on that day at a price beyond that limit.  The daily limit  governs only
price  movement  during a particular  trading day and  therefore  does not limit
potential  losses,  because the limit may prevent the liquidation of unfavorable
positions.  Futures contract prices have  occasionally  moved to the daily limit
for  several  consecutive  trading  days  with  little  or no  trading,  thereby
preventing  prompt  liquidation of futures positions and subjecting some futures
traders to substantial losses.


   Federal Tax Treatment of Futures  Contracts.  Each  Portfolio is required for
Federal income tax purposes to recognize as income for each taxable year its net
unrealized  gains and losses on futures  contracts  as of the end of the year as
well as those actually realized during the year. In most cases, any gain or loss
recognized with respect to a futures  contract is considered to be 60% long-term
capital gain or loss and 40% short-term  capital gain or loss, without regard to
the holding  period of the  contract.  Furthermore,  sales of futures  contracts
which are intended to hedge against a change in the value of securities  held by
a Portfolio may affect the holding period of such securities and,  consequently,
the nature of the gain or loss on such securities upon disposition.  A Portfolio
may be required to defer the  recognition of losses on futures  contracts to the
extent of any unrecognized gains on related positions held by the Portfolio.

                                      B-3
<PAGE>



   In order for a  Portfolio  to  continue  to qualify  for  Federal  income tax
treatment as a regulated  investment  company,  at least 90% of its gross income
for a taxable  year must be derived from  qualifying  income;  i.e.,  dividends,
interest,  income  derived  from  loans of  securities,  gains  from the sale of
securities  or foreign  currencies  or other income  derived with respect to the
Portfolio's business of investing in securities.  It is anticipated that any net
gain realized from the closing out of futures  contracts will be considered gain
from the sale of securities  and therefore be qualifying  income for purposes of
the 90% requirement.

   A Portfolio will  distribute to  shareholders  annually any net capital gains
which have been recognized for Federal income tax purposes (including unrealized
gains at the end of the Portfolio's fiscal year) on futures  transactions.  Such
distributions  will be combined with  distributions of capital gains realized on
the Portfolio's other investments and shareholders will be advised on the nature
of the distributions.


   Repurchase  Agreements.  Each  Portfolio may invest in repurchase  agreements
with commercial banks,  brokers or dealers either for defensive  purposes due to
market  conditions  or to  generate  income  from its excess  cash  balances.  A
repurchase  agreement is an agreement under which the Portfolio acquires a money
market  instrument  (generally a security  issued by the U.S.  Government  or an
agency  thereof,  a banker's  acceptance  or a  certificate  of deposit)  from a
commercial bank, broker or dealer,  subject to resale to the seller at an agreed
upon price and date  (normally,  the next business day). A repurchase  agreement
may be considered a loan collateralized by securities. The resale price reflects
an agreed upon interest rate  effective for the period the instrument is held by
the  Portfolio  and  is  unrelated  to  the  interest  rate  on  the  underlying
instrument.  In these  transactions,  the  securities  acquired by the Portfolio
(including accrued interest earned thereon) must have a total value in excess of
the value of the  repurchase  agreement  and are held by a custodian  bank until
repurchased.  In  addition,  the Fund's  Board of  Trustees  will  monitor  each
Portfolio's  repurchase  agreement  transactions  generally  and will  establish
guidelines  and  standards  for  review  by  the   investment   adviser  of  the
creditworthiness  of any bank, broker or dealer party to a repurchase  agreement
with the Portfolio. No more than an aggregate of 15% of a Portfolio's assets, at
the  time of  investment,  will be  invested  in  repurchase  agreements  having
maturities  longer  than  seven  days  and in  securities  subject  to  legal or
contractual  restrictions  on resale for which  there are no  readily  available
market quotations. From time to time, the Fund's Board of Trustees may determine
that certain restricted  securities known as Rule 144A securities are liquid and
not subject to the 15% limitation described above.

   The use of repurchase  agreements involves certain risks. For example, if the
other  party to the  agreement  defaults on its  obligation  to  repurchase  the
underlying  security at a time when the value of the  security has  declined,  a
Portfolio may incur a loss upon disposition of the security.  If the other party
to the agreement  becomes insolvent and subject to liquidation or reorganization
under  the  Bankruptcy  Code or  other  laws,  a court  may  determine  that the
underlying  security is  collateral  for a loan by the  Portfolio not within the
control of the Portfolio and  therefore the  realization  by a Portfolio on such
collateral may be automatically stayed. Finally, it is possible that a Portfolio
may not be able to substantiate its interest in the underlying  security and may
be deemed an unsecured  creditor of the other party to the agreement.  While the
Fund's  management  acknowledges  these risks,  it is expected  that they can be
controlled through careful monitoring procedures.

   Lending of Securities. Each Portfolio may lend its investment securities on a
short-term or long-term basis to qualified  institutional  investors who need to
borrow  securities in order to complete certain  transactions,  such as covering
short sales,  avoiding  failures to deliver  securities or completing  arbitrage
operations.  By lending  its  investment  securities,  a  Portfolio  attempts to
increase its net investment  income through the receipt of interest on the loan.
Any gain or loss in the market price of the  securities  loaned that might occur
during the term of the loan  would be for the  account  of the  Portfolio.  Each
Portfolio  may lend its  investment  securities to qualified  brokers,  dealers,
banks or other financial  institutions,  so long as the terms, the structure and
the  aggregate  amount of such loans are not  inconsistent  with the  Investment
Company Act of 1940,  or the Rules and  Regulations  or  interpretations  of the
Securities and Exchange Commission (the "Commission") thereunder. The Commission
currently requires that: (a) the borrower pledge and maintain with the Portfolio
collateral  consisting  of cash,  an  irrevocable  letter of credit  issued by a
domestic  U.S.  bank,  or  securities  issued or guaranteed by the United States
Government  having a value at all  times  not less than 100% of the value of the
securities loaned, (b) the borrower add to such collateral whenever the price of
the securities loaned rises (i.e., the borrower "marks to the market" on a daily
basis),  (c) the loan be made  subject to  termination  by the  Portfolio at any
time, and (d) the Portfolio receive  reasonable  interest on the loan (which may
include the  Portfolio's  investing  any cash  collateral  in  interest  bearing
short-term  investments),  any  distribution  on the loaned  securities  and any
increase in their  market  value.  Loan  arrangements  made by a Portfolio  will
comply with all other applicable regulatory requirements, including the rules of
the New York Stock Exchange,  which rules presently require the borrower,  after
notice,  to redeliver the securities  within the normal settlement time of three
business   days.   All  relevant   facts  and   circumstances,   including   the
creditworthiness  of the broker,  dealer or  institution,  will be considered in
making decisions with respect to the lending of securities, subject to review by
the Fund's Board of Trustees.

                                      B-4

<PAGE>


   At the  present  time,  the  Staff of the  Commission  does not  object if an
investment  company pays  reasonable  negotiated  fees in connection with loaned
securities,  so long as such  fees  are set  forth  in a  written  contract  and
approved by the investment company's Directors (Trustees).  In addition,  voting
rights  pass with the  loaned  securities,  but if a  material  event will occur
affecting  an  investment  on loan,  the loan must be called and the  securities
voted.


                                   SHARE PRICE

   Each  Portfolio's  share price, or "net asset value" per share, is calculated
by dividing the total assets of each  Portfolio,  less all  liabilities,  by the
total number of shares outstanding.  The net asset value is determined as of the
close of the New York  Stock  Exchange  (the  "Exchange")  generally  4:00  p.m.
Eastern time on each day the exchange is open for trading.


   Portfolio  securities  for which  market  quotations  are  readily  available
(includes those securities listed on national securities  exchanges,  as well as
those quoted on the NASDAQ Stock Market) will be valued at the last quoted sales
price on the day the valuation is made. Such securities  which are not traded on
the  valuation  date are  valued  at the mean of the bid and ask  prices.  Price
information on  exchange-listed  securities is taken from the exchange where the
security is primarily  traded.  Any foreign  securities are valued at the latest
quoted sales price available before the time when assets are valued.  Securities
may be valued on the basis of prices  provided  by a pricing  service  when such
prices are believed to reflect the fair market value of such securities.


   Short-term  instruments (those acquired with remaining  maturities of 60 days
or less) may be valued at cost, plus or minus any amortized discount or premium,
which approximates market value.


   Bonds and other fixed income  securities may be valued on the basis of prices
provided by a pricing  service when such prices are believed to reflect the fair
market value of such securities. The prices provided by a pricing service may be
determined without regard to bid or last sale prices of each security,  but take
into account institutional-size  transactions in similar groups of securities as
well as any developments related to specific securities.


   Foreign  securities  are valued at the last quoted sales price,  according to
the  broadest  and  most  representative  market,  available  at the  time  each
Portfolio  is  valued.  If  events  which  materially  affect  the value of each
Portfolio's investments occur after the close of the securities markets on which
such securities are primarily  traded,  those  investments may be valued by such
methods as the Board of Trustees deems in good faith to reflect fair value.


   In determining  each  Portfolio's  net asset value per share,  all assets and
liabilities  initially  expressed in foreign  currencies  will be converted into
U.S.  dollars using the  officially  quoted daily  exchange rates used by Morgan
Stanley Capital  International in calculating various benchmarking indices. This
officially quoted exchange rate may be determined prior to or after the close of
a particular  securities market. If such quotations are not available,  the rate
of exchange will be determined in accordance  with policies  established in good
faith by the Board of Trustees.


   Other assets and securities for which no quotations are readily  available or
which are  restricted  as to sale (or resale) are valued by such  methods as the
Board of Trustees deems in good faith to reflect fair value.


   The share  price for each  Portfolio  can be found  daily in the mutual  fund
listings of most major newspapers under the heading of Vanguard Funds.

                                      B-5
<PAGE>


                               PURCHASE OF SHARES


   The purchase  price of shares of each  Portfolio of the Fund is the net asset
value  next  determined  after the  order is  received.  The net asset  value is
calculated  as of the  close of  trading  on the New York  Stock  Exchange  (the
"Exchange"), generally 4 p.m. Eastern time, on each day the Exchange is open for
business,  and on any  other  day on which  there  is  sufficient  trading  in a
Portfolio's investment securities to materially affect the Portfolio's net asset
value per share.  An order  received  prior to the close of the Exchange will be
executed at the price  computed on the date of  receipt;  and an order  received
after the close of the  Exchange  will be executed at the price  computed on the
next day the Exchange is open.

   Each Portfolio  reserves the right in its sole  discretion (i) to suspend the
offering of its shares,  (ii) to reject  purchase orders when in the judgment of
management  such  rejection  is in the best  interest of the Fund,  and (iii) to
reduce or waive the minimum  investment for or any other restrictions on initial
and  subsequent  investments  for certain  fiduciary  accounts  such as employee
benefit plans or under  circumstances where certain economies can be achieved in
sales of a Portfolio's shares.


   Each Portfolio has authorized Charles Schwab & Co., Inc. ("Schwab") to accept
on its behalf purchase and redemption orders under certain terms and conditions.
Schwab is also authorized to designate other  intermediaries  to accept purchase
and  redemption  orders on each  Portfolio's  behalf  subject to those terms and
conditions.  Under this arrangement,  the Fund will be deemed to have received a
purchase or redemption order when Schwab or, if applicable,  Schwab's authorized
designee,  accepts the order in accordance with each  Portfolio's  instructions.
Customer orders that are properly transmitted to each Portfolio by Schwab, or if
applicable, Schwab's authorized designee, will be priced as follows:


   Orders  received by Schwab  before 3 p.m.  Eastern time on any business  day,
will be sent to  Vanguard  that day and your  share  price will be based on each
Portfolio's net asset value  calculated at the close of trading that day. Orders
received by Schwab after 3 p.m.  Eastern  time,  will be sent to Vanguard on the
following  business  day and your share price will be based on each  Portfolio's
net asset value calculated at the close of trading that day.

                              REDEMPTION OF SHARES


   Each  Portfolio  may suspend  redemption  privileges  or postpone the date of
payment:  (i) during any period that the New York Stock  Exchange is closed,  or
trading on the  Exchange is  restricted  as  determined  by the  Securities  and
Exchange Commission (the "Commission"), (ii) during any period when an emergency
exists as defined by the rules of the  Commission as a result of which it is not
reasonably  practicable for a Portfolio to dispose of securities owned by it, or
fairly to determine the value of its assets, and (iii) for such other periods as
the Commission may permit.


   The  Fund  has  made an  election  with  the  Commission  to pay in cash  all
redemptions  requested by any shareholder of record limited in amount during any
90-day  period to the lesser of  $250,000 or 1% of the net assets of the Fund at
the beginning of such period.  Such commitment is irrevocable  without the prior
approval of the  Commission.  Redemptions  in excess of the above  limits may be
paid in whole or in part, in  investment  securities or in cash, as the Trustees
may deem  advisable;  however,  payment  will be made  wholly in cash unless the
Trustees believe that economic or market  conditions exist which would make such
a practice  detrimental to the best  interests of the Fund. If  redemptions  are
paid in investment  securities,  such  securities will be valued as set forth in
the Prospectus  under "Share Price" and a redeeming  shareholder  would normally
incur brokerage expenses if he converted these securities to cash.

   No charge is made by a Portfolio for redemptions.  Any redemption may be more
or less  than  the  shareholder's  cost  depending  on the  market  value of the
securities held by the Portfolio.

   Signature  Guarantees.  To protect your  account,  the Fund and Vanguard from
fraud,  signature  guarantees  are required for certain  redemptions.  Signature
guarantees  enable  the  Fund to  verify  the  identity  of the  person  who has
authorized a redemption from your account.  Signature guarantees are required in
connection  with: (1) all redemptions,  regardless of the amount involved,  when
the proceeds are to be paid to someone other than the registered owner(s) and/or
to an address other than the address of record; and (2) share transfer requests.
These requirements may be waived by the Fund in certain instances.

                                      B-6
<PAGE>



   A  guarantor  must be a bank,  a trust  company,  a member firm of a domestic
stock exchange, or a foreign branch of any of the foregoing. Notaries public are
not acceptable signature guarantors.

                             YIELD AND TOTAL RETURN


   The  yield of the U.S.  Portfolio  of the Fund for the  30-day  period  ended
December 31, 1997 was +1.11%.


   The  average  annual  total  return  of each  Portfolio  of the  Fund for the
following periods ending December 31, 1997 is set forth below:


<TABLE>
<CAPTION>
   <S>                           <C>            <C>               <C>
                                 1 year ended   5 years ended     10 years ended
                                  12/31/97        12/31/97           12/31/97

   
   U.S. Portfolio                  +29.48%         +18.70%            +15.58%
   Vanguard International
   Value Portfolio                  -4.58%          +9.63%             +7.63%
    
</TABLE>

   Total  return is computed by finding the average  compounded  rates of return
over the periods set forth above that would equate an initial amount invested at
the beginning of the periods to the ending redeemable value of the investment.

                             INVESTMENT LIMITATIONS

   Each  Portfolio  of the Fund is subject to the  following  limitations  which
(except as indicated otherwise below) may not be changed without the approval of
at least a majority  of the  outstanding  voting  securities  (as defined in the
Investment  Company Act of 1940 (the "1940 Act")) of the Fund. A Portfolio  will
not:

   (1)  Borrow money except that the Portfolio may borrow from banks (or through
        reverse  repurchase   agreements),   for  temporary  or  emergency  (not
        leveraging) purposes, including the meeting of redemption requests which
        might otherwise  require the untimely  disposition of securities,  in an
        amount  not  exceeding  10% of the value of the  Portfolio's  net assets
        (including the amount borrowed and the value of any outstanding  reverse
        repurchase  agreements)  at the time  the  borrowing  is made.  Whenever
        borrowings  exceed 5% of the value of the  Portfolio's  net assets,  the
        Portfolio will not make any additional investments;

   (2)  With  respect  to 75% of the value of its  total  assets,  purchase  the
        securities  of any  issuer  (except  obligations  of the  United  States
        government and its instrumentalities) if as a result the Portfolio would
        hold more than 10% of the outstanding  voting  securities of the issuer,
        or more than 5% of the value of the  Portfolio's  total  assets would be
        invested in the securities of such issuer;

   (3)  Invest in companies for the purpose of exercising control;

   (4)  Invest in securities  of other  investment  companies,  except as may be
        acquired as a part of a merger,  consolidation  or acquisition of assets
        or otherwise to the extent  permitted by Section 12 of the 1940 Act. The
        Portfolio will invest only in investment companies which have investment
        objectives  and  investment   policies  consistent  with  those  of  the
        Portfolio;

   (5)  Engage  in the  business  of  underwriting  securities  issued  by other
        persons,  except to the extent that the  Portfolio  may  technically  be
        deemed  to be an  underwriter  under  the  Securities  Act of  1933,  as
        amended, in disposing of portfolio securities;

   
   (6)  Purchase or otherwise  acquire any  security if, as a result,  more than
        15% of its net assets would be invested in securities  that are illiquid
        (including the Fund's  investment in The Vanguard Group, as discussed on
        page B-9);
    


   (7)  Purchase  or  sell  real  estate  although  it  may  purchase  and  sell
        securities of companies which deal in real estate or interests therein;

   (8)  Purchase  securities on margin or sell any securities  short except that
        each  Portfolio may invest in stock futures  contracts,  stock  options,
        options  on  stock  futures   contracts  and  foreign  currency  futures
        contracts  to the extent  that not more than 5% of its total  assets are
        required as margin deposit to secure obligations under futures contracts
        and  not  more  than  20% of its  total  assets  are  committed  to such
        transactions at any time;

                                      B-7
<PAGE>


   (9)  Invest more than 5% of the value of the total assets of the Portfolio at
        the time of  investment  in the  securities  of any  issuers  which have
        records of less than three years'  continuous  operation,  including the
        operation  of any  predecessor,  but this  limitation  does not apply to
        securities  issued or  guaranteed  as to interest  and  principal by the
        United States Government or its agencies or instrumentalities;


  (10)  Make loans  except by:  (i)  purchasing  a portion of an issue of bonds,
        debentures or similar obligations which are either publicly  distributed
        or customarily purchased by institutional investors,  (ii) entering into
        repurchase  agreements,  provided,  however,  that repurchase agreements
        maturing in more than seven days,  together with securities which do not
        have  readily  available  market  quotations,  will not  exceed 15% of a
        Portfolio's  total assets,  and (iii) lending its securities as provided
        under "Investment Objective and Policies";


  (11)  Purchase or write put or call  options  except as  specified in "(8)" on
        page 7;

  (12)  Invest  in  interests  in oil,  gas,  or other  mineral  exploration  or
        development programs;


  (13)  Purchase or sell commodities or commodity  contracts except as specified
        in "(8)" on page 7; and

  (14)  Concentrate  its investments in a particular  industry,  although it may
        invest up to 25% of the value of the Portfolio's total assets,  taken at
        market,  in securities  of issuers all of which conduct their  principal
        business activities in the same industry.

   Notwithstanding these limitations, the Fund may own all or any portion of the
securities  of, or make loans to, or contribute to the costs or other  financial
requirements  of any company  which will be wholly  owned by the Fund and one or
more other  investment  companies  and is  primarily  engaged in the business of
providing,  at-cost, management,  administrative or related services to the Fund
and other investment companies. See below for "MANAGEMENT OF THE FUND."

   The  above-mentioned  investment  limitations  are  considered  at  the  time
investment securities are purchased.

                             MANAGEMENT OF THE FUND

Trustees and Officers

   The Officers of the Fund manage its day-to-day operations and are responsible
to the Fund's  Board of Trustees.  The Trustees set broad  policies for the Fund
and choose its  Officers.  Following  is a list of Trustees  and Officers of the
Fund and a statement of their present positions and principal occupations during
the past five years.  The mailing address of the Fund's Trustees and Officers is
Post Office Box 876, Valley Forge, PA 19482.


JOHN C. BOGLE, (DOB: 5/8/1929) Senior Chairman and Trustee*

   Senior Chairman and Director of The Vanguard Group,  Inc., and of each of the
   investment companies in The Vanguard Group. Director of The Mead Corporation,
   General Accident Insurance, and Chris-Craft Industries, Inc.


JOHN  J.  BRENNAN,   (DOB:  7/29/1954)  Chairman,   Chief  Executive  Officer  &
Trustee*

   Chairman,  Chief Executive Officer and Director of The Vanguard Group,  Inc.,
   and of each of the other investment companies in The Vanguard Group.


ROBERT E. CAWTHORN, (DOB: 9/28/1935) Trustee

   Chairman  Emeritus  and  Director  of  Rhone-Poulenc  Rorer,  Inc.;  Managing
   Director  of Global  Health  Care  Partners/DLJ  Merchant  Banking  Partners;
   Director of Sun Company, Inc., and Westinghouse Electric Corporation.

   
BARBARA BARNES HAUPTFUHRER, (DOB: 10/11/1928) Trustee
    

   Director  of  The  Great  Atlantic  and  Pacific  Tea  Company,  IKON  Office
   Solutions, Inc., Raytheon Company, Knight-Ridder,  Inc., Massachusetts Mutual
   Life Insurance Co., and Ladies  Professional  Golf  Association;  and Trustee
   Emerita of Wellesley College.

                                      B-8
<PAGE>



BRUCE K. MACLAURY, (DOB: 5/7/1931) Trustee

   President Emeritus of The Brookings Institution; Director of American Express
   Bank Ltd., The St. Paul Companies, Inc., and National Steel Corporation.


BURTON G. MALKIEL, (DOB: 8/28/1932) Trustee

   Chemical  Bank  Chairman's  Professor  of  Economics,  Princeton  University;
   Director of Prudential  Insurance Co. of America,  Amdahl Corporation,  Baker
   Fentress & Co., The Jeffrey Co., and Southern New England  Telecommunications
   Company.


ALFRED M. RANKIN, JR., (DOB: 10/8/1941) Trustee

   Chairman,   President,   Chief  Executive  Officer,  and  Director  of  NACCO
   Industries  Inc.;  Director  of The  BFGoodrich  Company,  and  The  Standard
   Products Company.


JOHN C. SAWHILL, (DOB: 6/12/1936) Trustee

   President and Chief Executive  Officer of The Nature  Conservancy;  formerly,
   Director  and Senior  Partner of McKinsey & Co.,  and  President  of New York
   University;  Director of Pacific Gas and Electric  Company,  Procter & Gamble
   Company, and NACCO Industries.


JAMES O. WELCH, JR., (DOB: 5/13/1931) Trustee

   Retired  Chairman of Nabisco Brands Inc.;  retired Vice Chairman and Director
   of RJR Nabisco; Director of TECO Energy, Inc., and Kmart Corporation.


J. LAWRENCE WILSON, (DOB: 3/2/1936) Trustee

   Chairman  and Chief  Executive  Officer of Rohm & Haas  Company;  Director of
   Cummins Engine Company,  and the Mead Corporation;  and Trustee of Vanderbilt
   University.


RAYMOND J. KLAPINSKY, (DOB: 12/7/1938) Secretary*

   Managing  Director and Secretary of The Vanguard  Group,  Inc.;  Secretary of
   each of the investment companies in The Vanguard Group.


RICHARD F. HYLAND, (DOB: 3/22/1937) Treasurer*

   Treasurer of The Vanguard Group, Inc. and of each of the investment companies
   in The Vanguard Group.


KAREN E. WEST, (DOB: 9/13/1946) Controller*

   Principal of The Vanguard Group,  Inc.;  Controller of each of the investment
   companies in The Vanguard Group.



- ----------
* Officers of the Fund are  "interested  persons"  as defined in the  Investment
Company Act of 1940.


                               THE VANGUARD GROUP

   Vanguard/Trustees'  Equity  Fund  is  a  member  of  The  Vanguard  Group  of
Investment  Companies.  Through  their  jointly-owned  subsidiary,  The Vanguard
Group,  Inc.  ("Vanguard"),  the Fund and the other Funds in the Group obtain at
cost  virtually  all  of  their   corporate   management,   administrative   and
distribution services. Vanguard also provides investment advisory services on an
at-cost basis to several of the Vanguard Funds.

   Vanguard  employs  a  supporting  staff  of  management  and   administrative
personnel  needed  to  provide  the  requisite  services  to the  Funds and also
furnishes the Funds with necessary office space, furnishings and equipment. Each
Fund pays its share of Vanguard's  net expenses  which are  allocated  among the
Funds under methods approved by the Board of Trustees  (Directors) of each Fund.
In addition,  each Fund bears its own direct expenses,  such as legal,  auditing
and custodian fees.

   The Vanguard Group adheres to a Code of Ethics  established  pursuant to Rule
17j-1 under the Investment  Company Act of 1940. The Code is designed to prevent
unlawful  practices in  connection  with the purchase or sale of  securities  by
persons  associated  with  Vanguard.  Under  Vanguard's  Code of Ethics  certain
officers  and  employees  of  Vanguard  who are  considered  access  persons are
permitted  to  engage  in  personal  securities   transactions.   However,  such
transactions are subject to procedures and guidelines  substantially  similar to
those  recommended  by the  mutual  fund  industry  and  approved  by  the  U.S.
Securities and Exchange Commission.


   The  Vanguard  Group was  established  and  operates  under a Funds'  Service
Agreement  which was  approved  by the  shareholders  of each of the Funds.  The
amounts  which each of the Funds has invested are adjusted  from time to time in
order to maintain the  proportionate  relationship  between each Fund's relative
net assets and its contribution to Vanguard's capital. At December 31, 1997, the
Fund had  contributed  capital  of  $66,000 to  Vanguard,  representing  0.4% of
Vanguard's capitalization. The Funds' Service Agreement provides as follows: (a)
each Vanguard Fund may invest up to .40% of its current assets in Vanguard,  and
(b) there is no other  limitation  on the  amount  that each  Vanguard  Fund may
contribute to Vanguard's capitalization.

                                      B-9
<PAGE>



   Management.  Corporate  management and administrative  services include:  (1)
executive  staff;  (2) accounting and financial;  (3) legal and regulatory;  (4)
shareholder  account  maintenance;  (5)  monitoring  and  control  of  custodian
relationships;  (6)  shareholder  reporting;  and (7) review and  evaluation  of
advisory and other services  provided to the Funds by third parties.  During the
fiscal year ended December 31, 1997,  the Fund's share of Vanguard's  actual net
costs of operation relating to management and administrative services (including
transfer agency) totaled approximately $2,689,000.

   Distribution. Vanguard provides all distribution and marketing activities for
the  Funds  in  the  Group.  Vanguard  Marketing  Corporation,   a  wholly-owned
subsidiary  of  Vanguard,  acts as  Sales  Agent  for  shares  of the  Funds  in
connection  with any sales made  directly to investors in the states of Florida,
Missouri, New York, Ohio, Texas and such other states as it may be required.

   The  principal   distribution  expenses  are  for  advertising,   promotional
materials  and  marketing  personnel.  Distribution  services  may also  include
organizing  and  offering  to the  public,  from  time to time,  one or more new
investment  companies which will become members of the Group.  The Directors and
Officers of Vanguard  determine the amount to be spent annually on  distribution
activities,  the  manner and  amount to be spent on each  Fund,  and  whether to
organize new investment companies.


   One half of the distribution  expenses of a marketing and promotional  nature
is allocated among the Funds based upon their relative net assets. The remaining
one half of these  expenses is allocated  among the Funds based upon each Fund's
sales for the preceding 24 months  relative to the total sales of the Funds as a
Group,   provided,   however,   that  no  Fund's  aggregate  quarterly  rate  of
contribution  for  distribution  expenses of a marketing and promotional  nature
shall exceed 125% of the average  distribution  expense rate for the Group,  and
that no Fund shall incur annual distribution  expenses in excess of 20/100 of 1%
of its average  month-end net assets.  During the fiscal year ended December 31,
1997,  the Fund paid  approximately  $222,000  of the Group's  distribution  and
marketing expenses.

   
   Investment  Advisory Service.  Vanguard provides investment advisory services
to Vanguard  Money  Market  Reserves,  Vanguard  Municipal  Bond Fund,  Vanguard
Admiral  Funds,  several  Portfolios of Vanguard Fixed Income  Securities  Fund,
Vanguard  Treasury Fund,  Vanguard  California  Tax-Free Fund,  Vanguard Florida
Insured  Tax-Free Fund,  Vanguard New Jersey  Tax-Free  Fund,  Vanguard New York
Tax-Free Fund, Vanguard Ohio Tax-Free Fund, Vanguard Pennsylvania Tax-Free Fund,
Vanguard  Index  Trust,  Vanguard  International  Equity  Index  Fund,  Vanguard
Balanced  Index Fund,  Vanguard Bond Index Fund,  Vanguard  Institutional  Index
Fund,  Vanguard  Tax-Managed  Fund, the Aggressive  Growth Portfolio of Vanguard
Horizon  Fund,  the REIT Index  Portfolio  of Vanguard  Specialized  Portfolios,
several Portfolios of Vanguard Variable Insurance Fund, the Total  International
Portfolio  of  Vanguard  STAR Fund,  a portion of  Vanguard/Windsor  II Fund,  a
portion of  Vanguard/Morgan  Growth Fund,  Vanguard  Explorer Fund, and Vanguard
Equity Income Fund, as well as several indexed separate accounts. These services
are provided on an at-cost basis from a money management staff employed directly
by Vanguard.  The  compensation and other expenses of this staff are paid by the
Funds utilizing these services.
    

Director/Trustee Compensation

   The  individuals in the table on page 11 serve as  Directors/Trustees  of all
Vanguard   Funds,   and   each   Fund   pays  a   proportionate   share  of  the
Directors'/Trustees'  compensation.  The Funds employ their officers on a shared
basis, as well.  However,  officers are compensated by The Vanguard Group, Inc.,
not the Funds.

   Independent   Directors/Trustees   The  Funds  compensate  their  independent
Directors/Trustees--that  is, the ones who are not also officers of the Fund--in
three ways:

   o  The independent Directors/Trustees receive an annual fee for their service
      to the  Funds,  which is  subject  to  reduction  based on  absences  from
      scheduled Board meetings.

                                      B-10
<PAGE>


   o  The independent Directors/Trustees are reimbursed for the travel and other
      expenses that they incur in attending Board meetings.

   o  Upon retirement,  the independent  Directors/Trustees receive an aggregate
      annual  fee of $1,000  for each year  served on the  Board,  up to fifteen
      years  of  service.  This  annual  fee is  paid  for ten  years  following
      retirement, or until the Directors'/Trustees' death.

   "Interested"  Directors/Trustees  The Funds' interested  Directors/Trustees--
Messrs.  Bogle and Brennan  receive no  compensation  for their  service in that
capacity.  However,  they are paid in their  role as  Officers  of The  Vanguard
Group, Inc.

   Compensation Table The following table provides compensation details for each
of the  Trustees.  For the Fund,  we list the amounts paid as  compensation  and
accrued as retirement  benefits by the Fund for each Trustee.  In addition,  the
table shows the total amount of benefits that we expect each Director/Trustee to
receive  from all  Vanguard  Funds  upon  retirement,  and the  total  amount of
compensation  paid  to  each   Director/Trustee   by  all  Vanguard  Funds.  All
information shown is for the fiscal year ended December 31, 1997.



<TABLE>
<CAPTION>
                         VANGUARD/TRUSTEES' EQUITY FUND
                               COMPENSATION TABLE

<S>                                  <C>              <C>                   <C>              <C>
                                       Aggregate           Pension or          Estimated      Total Compensation
                                     Compensation          Retirement       Annual Benefits   From All Vanguard
Names of Trustees                     From Trust      Benefits Accrued As   Upon Retirement     Funds Paid to
                                                         Part of Trust                           Trustees(2)
                                                            Expenses
- ---------------------------------- ------------------ --------------------- ---------------- ---------------------
John C. Bogle(1)                         None                 None               None                None
John J. Brennan(1)                       None                 None               None                None
Barbara Barnes Hauptfuhrer               $305                 $ 44              $15,000            $70,000
Robert E. Cawthorn                       $305                 $ 37              $13,000            $70,000
Bruce K. MacLaury                        $327                 $ 42              $12,000            $65,000
Burton G. Malkiel                        $308                 $ 30              $15,000            $70,000
Alfred M. Rankin, Jr.                    $305                 $ 23              $15,000            $70,000
John C. Sawhill                          $305                 $ 27              $15,000            $70,000
James O. Welch, Jr.                      $305                 $ 34              $15,000            $70,000
J. Lawrence Wilson                       $305                 $ 24              $15,000            $70,000



(1) As "Interested Trustees," Messrs. Bogle and Brennan receive no compensation for their service as Trustees.


(2)The amounts reported in this column reflect the total  compensation paid to each Trustee for their service as Director or Trustee
of 35 Vanguard Funds (34 in the case of Mr. Malkiel; 28 in the case of Mr. MacLaury).

</TABLE>



                          INVESTMENT ADVISORY SERVICES

Vanguard International Value Portfolio Investment Adviser


   
   The  investment  adviser  to  Vanguard  International  Value  Portfolio  is a
wholly-owned subsidiary of UBS Asset Management London Ltd. doing business under
the name "UBS International Investment London Ltd." ("UBSII"),  Triton Court, 14
Finsbury Square,  London, England EC2A 1PD. UBSII provides investment management
services to numerous  institutional  accounts,  such as corporate pension plans,
endowment funds and individual investors. Under an Investment Advisory Agreement
with the  Fund,  dated  March  31,  1996,  UBSII,  subject  to the  control  and
supervision of the Fund's Board of Trustees and in  conformance  with the stated
investment  objective and policies of Vanguard  International  Value  Portfolio,
manages the investment and reinvestment of the assets of Vanguard  International
Value  Portfolio.  In this  regard,  it is the  responsibility  of UBSII to make
investment decisions for Vanguard International Value Portfolio and to place the
Portfolio's purchase and sale orders for investment securities.
    

                                      B-11
<PAGE>


   As compensation for the services  rendered by UBSII under the Agreement,  and
the assumption by UBSII of the expenses  related thereto (other than the cost of
securities  purchased for Vanguard  International  Value Portfolio and the taxes
and  brokerage  commissions,  if any,  payable in  connection  with the purchase
and/or  sale of such  securities),  the  Portfolio  pays UBSII an  advisory  fee
calculated  by  applying  a  quarterly  rate,  based  on  the  following  annual
percentage  rates,  to the average  month-end  assets of Vanguard  International
Value Portfolio, for the quarter.

      Net Assets                                                      Rate
      First $50 million.............................................  0.475%
      Next $450 million.............................................  0.150%
      Next $500 million.............................................  0.120%
      Over $1 billion...............................................  0.110%

   Effective  with the quarter ending June 30, 1997, the basic fee paid to UBSII
("Basic Fee"), shall be increased or decreased by applying an  incentive/penalty
adjustment  to the  Basic  Fee  reflecting  the  investment  performance  of the
Portfolio  relative to the return of the Morgan  Stanley  Capital  International
Europe,  Australasia and Far East ("MSCI-EAFE")  Index. The following table sets
forth  the  fee   payable   by  the  Fund  to  UBSII,   Inc.   based   upon  the
incentive/penalty adjustment:

     Differential Versus MSCI-EAFE Index                 Adjustment*
     -----------------------------------                 --------------
     +13.5% points or more ............................. -0.50 x Basic Fee
     Between +4.5% points and +13.5 points above........ +0.25 x Basic Fee
     Between +4.5% points and -0% points................     0 x Basic Fee
     Between 0% points and -9% points below............. -0.25 x Basic Fee
     -9% points or more below........................... -0.50 x Basic Fee

* For purposes of this calculation,  the Basic Fee is calculated by applying the
quarterly  rate based on the Annual Basic Fee Rate using average assets over the
same time period which the performance is measured.


   Through the quarter ending June 30, 1999, the incentive/penalty fee for UBSII
will be calculated according to the following transition rules:

   (a)  April 1, 1997 through June 30, 1999.  Beginning  with the quarter ending
        June 30,  1997 and  through  the  quarter  ending  June  30,  1999,  the
        incentive/penalty  fee will be computed  based upon a comparison  of the
        investment  performance  of the Portfolio and that of the MSCI-EAFE over
        the number of months that have elapsed  between July 1, 1996 and the end
        of the quarter for which the fee is computed.  Performance differentials
        vs. the  MSCI-EAFE  listed  above shall  increase  proportionately  from
        quarter  to  quarter  from 4.5% and -3%,  respectively,  for the  twelve
        months  ending June 30, 1997,  to 13.5% and -9%,  respectively,  for the
        thirty-six months ending June 30, 1999.

   (b)  On and after June 30,  1999.  For the  quarter  ending June 30, 1999 and
        thereafter, the period used to calculate the incentive/penalty fee shall
        be the 36 months  preceding  the end of the quarter for which the fee is
        being  computed and the number of percentage  points used shall be 13.5%
        and -9%.

   The investment performance of the Portfolio,  for any period,  expressed as a
percentage of the "Portfolio  Unit Value" at the beginning of such period,  will
be the sum of: (i) the change in the  Portfolio  Unit Value  during such period;
(ii) the unit value of the Fund's cash  distributions  from the  Portfolio's net
investment  income  and  realized  net  capital  gains  (whether   long-term  or
short-term)  having an ex-dividend date occurring within such period;  and (iii)
the unit value of taxes paid including withholding taxes and capital gains taxes
paid or  accrued  during  such  period  by the Fund for  undistributed  realized
long-term capital gains realized from the Portfolio.

   The  "Portfolio  Unit Value"  will be  determined  by dividing  the total net
assets of the  Portfolio by a given number of units.  On the initial date of the
agreement,  the number of units in the  Portfolio  will  equal the total  shares
outstanding  of the Fund.  After such  initial  date,  as assets are added to or
withdrawn  from the  Portfolio,  the  number of units of the  Portfolio  will be
adjusted  based on the unit value of the  Portfolio  on the day such changes are
executed.

   For the purposes of determining the  incentive/penalty  fee  adjustment,  the
Portfolio's  net assets will be averaged over the same period as the  investment
performance of those assets and the investment record of the MSCI-EAFE Index are
computed.

                                      B-12

<PAGE>



   During the period  beginning April 1, 1996 through  December 31, 1996 and the
fiscal year ended December 31, 1997, Vanguard International Value Portfolio paid
UBSII  advisory fees totaling  $1,086,000  (.11 of 1% of average net assets) and
$1,371,000 (.15% of 1% of average net assets).

Prior Investment Adviser for Vanguard International Value Portfolio


   From  its  inception  until  April  1,  1996,  Vanguard  International  Value
Portfolio employed Batterymarch  Financial Management as its investment adviser.
During the year ended December 31, 1995, and during the period beginning January
1, 1996 through  April 1, 1996,  Vanguard  International  Value  Portfolio  paid
Batterymarch  Financial  Management advisory fees totaling $1,516,000 (.15 of 1%
of average net assets),  and $378,000 (.04 of 1% of average net assets) before a
decrease of $94,000 (.01%) based on performance, respectively.

U.S. Portfolio Investment Advisor


   
   On April 1, 1996,  the U.S.  Portfolio  entered into an  Investment  Advisory
Agreement  with  Geewax,  Terker  & Co.  ("Geewax  Terker"),  99  Starr  Street,
Phoenixville,  Pa.  19460.  Under the  terms of the  Agreement,  Geewax  Terker,
subject to the control and  supervision  of the Fund's  Board of Trustees and in
conformance  with the Fund's  investment  objective  and  policies,  manages the
investment and reinvestment of the assets of the Fund's U.S. Portfolio.  In this
regard, it is the  responsibility of Geewax Terker to make investment  decisions
for the U.S. Portfolio and to place the Portfolio's purchase and sale orders for
investment  securities.  For the fiscal years ended December 31, 1995,  1996 and
1997, the U.S.  Portfolio paid Geewax advisory fees totaling $383,000 (.31 of 1%
of average net  assets)  $511,000  (.35 of 1% of average  net  assets)  before a
decrease  of  $192,000  (.13%) and  $615,000  (.40 of 1% of average  net assets)
before a decrease of $274,000 (.18%) based on performance, respectively.
    

   As  compensation  for the  services  rendered  by  Geewax  Terker  under  the
Agreement,  and the assumption by Geewax Terker of the expenses  related thereto
(other than the cost of  securities  purchased  for the U.S.  Portfolio  and the
taxes  and  brokerage  commissions,  if any,  payable  in  connection  with such
transactions),  the U.S.  Portfolio pays Geewax Terker at the end of each of the
Portfolio's fiscal quarter, a Basic Fee calculated by applying a quarterly rate,
based  on an  annual  percentage  rate  of  0.40%,  to the  Portfolio's  average
month-end assets for the quarter.

   The Basic Fee, as provided above, shall be increased or decreased by applying
an incentive/penalty  fee adjustment based on the investment  performance of the
Portfolio  relative to the  investment  performance of the Standard & Poor's 500
Composite  Stock Price Index ("S&P 500") over the preceding  36-month  period as
follows:
<TABLE>
<CAPTION>


     <S>                                               <C>
     Cumulative Three-Year Performance                 Performance Fee
     Differential vs. The S&P 500                        Adjustment*
     ---------------------------------                  ----------------
     +4.5% points or more  ..........................  0.50 x Basic Fee
     +2.25% points but less than +4.5% points........ -0.20 x Basic Fee
     Less than +2.25% points......................... -0.50 x Basic Fee
</TABLE>

* For purposes of this calculation,  the Basic Fee is calculated by applying the
quarterly rate against average assets over the 36-month period.

                                      B-13
<PAGE>


More Information on Advisers' Incentive/Penalty Fees

   In April 1972, the Securities and Exchange  Commission ("SEC") issued Release
No. 7113 under the Investment Company Act of 1940 to call attention of directors
and  investment  advisers  to  certain  factors  which  must  be  considered  in
connection  with investment  company  incentive fee  arrangements.  One of these
factors  is  to  "avoid  basing  significant  fee  adjustments  upon  random  or
insignificant differences" between the investment performance of a fund and that
of the particular  index with which it is being compared.  The Release  provides
that "preliminary  studies (of the SEC staff) indicate that as a 'rule of thumb'
the performance  difference  should be at least +10 percentage  points" annually
before the maximum performance adjustment may be made. However, the Release also
states that "because of the preliminary nature of these studies,  the Commission
is not recommending,  at this time, that any particular  performance  difference
exist before the maximum fee adjustment may be made". The Release concludes that
the directors of a fund "should satisfy themselves that the maximum  performance
adjustment will be made only for performance  differences that can reasonably be
considered  significant." The Board of Trustees of the Fund has fully considered
the SEC Release and believes that the performance adjustments as included in the
advisory  agreements  are  entirely  appropriate  although  not  within  the +10
percentage  points per year range  suggested  in the  Release.  Under the Fund's
investment  advisory  agreement  with Geewax  Terker,  the  maximum  performance
adjustment  is  made  at  a  difference  of  +4.5  percentage  points  from  the
performance of the index over a thirty-six month period, which would effectively
be the equivalent of approximately +1.478 percentage points difference per year.
The Fund's investment advisory agreements provide for no performance  adjustment
at a difference of less than +2.25 percentage points from the performance of the
index  over  a  thirty-six  month  period,  which  would  be the  equivalent  of
approximately  +0.744  percentage  points per year. Under the Fund's  investment
advisory  agreement with UBSII the maximum  performance  adjustment is made at a
difference of +/-13.5 percentage points from the performance of the index over a
thirty-six  month  period,   which  would   effectively  be  the  equivalent  of
approximately +/-4.5 percentage points difference per year.

Duration and Termination of Investment Advisory Agreements


   
   The  agreement  with Geewax,  Terker  continues  until March 31, 1999 and the
agreement  with UBS II  continues  until  March 30,  1999.  The  agreements  are
renewable thereafter,  for successive one-year periods, if specifically approved
at least  annually  by vote of the  Board of  Trustees  of the Fund at a meeting
called for the purpose of considering  such approval.  The Board's approval must
include  the  affirmative  votes of a majority of the  Trustees  who are neither
parties to the agreement or interested persons of such parties. In addition, the
question of continuing an agreement may be presented to shareholders. In such an
event,  the agreement  would be continued only if approved by vote of a majority
of the  outstanding  shares of the respective  Portfolio.  If the holders of the
Portfolio  fail to approve  the  agreement,  the  adviser of the  Portfolio  may
continue to serve as investment  adviser until new arrangements  have been made.
The agreements may be terminated at any time,  without  penalty,  by vote of the
Board of Trustees of the Fund or by vote of a majority of the outstanding shares
of the Portfolio on 60 days' written  notice to the investment  advisers,  or by
the  investment  advisers on 90 days'  written  notice to the Fund. An agreement
will automatically terminate in the event of its assignment.
    

   The Fund's  Board of  Trustees  may,  without the  approval of  shareholders,
provide for:

   (i) the employment of a new investment adviser pursuant to the terms of a new
advisory  agreement,  either as a replacement  for an existing  adviser or as an
additional adviser;

   (ii) a change in the terms of an advisory agreement; and

   (iii) the continued  employment  of an existing  adviser on the same advisory
contract terms where a contract has been assigned because of a change in control
of the adviser.

   Any such change  will only be made upon not less than 30 days' prior  written
notice to  shareholders  of the  affected  Portfolio,  which  shall  include the
information  concerning  the adviser that would have normally been included in a
proxy statement.

Control of the Advisers

   John J. Geewax and Bruce E. Terker,  Partners,  are the "controlling persons"
(as that term is  defined in the rules and  regulations  of the  Securities  and
Exchange Commission) of Geewax Terker.

   UBS Asset  Management  London  Ltd.,  owner of UBS  International  Investment
London  Ltd. is the  "controlling  person" (as that term is defined in the rules
and regulations of the Securities and Exchange  Commission) of UBSII. Union Bank
of  Switzerland  is the  beneficial  owner  of  100% of the  outstanding  equity
securities of UBS UK Holdings,  Ltd., which in turn is the 100% beneficial owner
of UBS Asset Management London, the 100% shareholder of UBSII.

                                      B-14
<PAGE>


                             PORTFOLIO TRANSACTIONS


   The  investment  advisory  agreements  authorize the  investment  advisers to
select the  brokers or dealers  that will  execute  the  purchases  and sales of
investment securities for the Portfolios,  and direct the investment advisers to
use their best  efforts to obtain the best  available  price and most  favorable
execution with respect to all transactions for the Portfolios.

   Since the Fund does not  market its shares  through  intermediary  brokers or
dealers,  it is not the Fund's  practice  to  allocate  brokerage  or  principal
business  on the basis of sales of its  shares  which may be made  through  such
firms.   However,   the  Fund  may  place   portfolio   orders  with   qualified
broker-dealers  who  recommend  the Fund to clients,  and may,  when a number of
brokers  and  dealers  can  provide  comparable  best price and  execution  on a
particular  transaction,  consider the sale of Fund shares by a broker or dealer
in selecting among qualified broker-dealers.

   Some  securities  considered for investment by one of the Portfolios may also
be appropriate for other clients served by the investment advisers.  If purchase
or sale of securities  consistent with the investment  policies of the Portfolio
and one or more of these  other  clients  served by the  investment  adviser  is
considered at or about the same time,  transactions  in such  securities will be
allocated among the Portfolio and clients in a manner deemed fair and reasonable
by the investment adviser. Although there is no specified formula for allocating
such  transactions,  the  various  allocation  methods  used  by the  investment
advisers, and the results of such allocations, are subject to periodic review by
the Fund's Board of Trustees.


   During  the  years  ended  December  31,  1995,  1996 and 1997 the Fund  paid
$2,173,469,    $13,290,992,   and   $2,431,609   respectively,    in   brokerage
commissions.

                              PERFORMANCE MEASURES

   Vanguard may use reprinted  material  discussing The Vanguard Group,  Inc. or
any of the member funds of The Vanguard Group of Investment Companies.

   Vanguard/Trustees'  Equity  Fund  may  use  one or  more,  of  the  following
unmanaged indexes for comparative performance purposes:

Standard & Poor's 500 Composite Stock Price Index--is a well diversified list of
500 companies representing the U.S. Stock Market.


Standard & Poor's  MidCap 400  Index--is  composed of 400 medium sized  domestic
stocks.


Standard & Poor's  SmallCap  600/BARRA Value  Index--contains  stocks of the S&P
SmallCap 600 Index which have a lower than average price-to-book ratio.


Standard & Poor's SmallCap  600/BARRA Growth  Index--contains  stocks of the S&P
SmallCap 600 Index which have a higher than average price-to-book ratio.


Russell  1000  Value  Index--consists  of the stocks in the  Russell  1000 Index
(comprising  the 1,000  largest  U.S.-based  companies  measured by total market
capitalization)  with the lowest  price-to-book  ratios,  comprising  50% of the
market capitalization of the Russell 1000.

Wilshire  5000  Equity   Index--consists   of  more  than  7,000  common  equity
securities,  covering  all  stocks  in the  U.S.  for  which  daily  pricing  is
available.

Wilshire 4500 Equity  Index--consists  of all stocks in the Wilshire 5000 except
for the 500 stocks in the Standard and Poor's 500 Index.

Russell 3000 Stock Index--a diversified  portfolio of approximately 3,000 common
stocks accounting for over 90% of the market value of publicly-traded  stocks in
the U.S.

                                      B-15
<PAGE>


Russell 2000 Stock Index--composed of the 2,000 smallest stocks contained in the
Russell  3000  representing  approximately  7% of the Russell  3000 total market
capitalization.

Russell 2000(R) Value Index--contains  stocks from the Russell 2000 Index with a
less-than-average growth orientation.


Morgan  Stanley  Capital  International  EAFE  Index--is an  arithmetic,  market
value-weighted  average of the performance of over 900 securities  listed on the
stock exchanges of countries in Europe, Australasia, and the Far East.

Goldman Sachs 100  Convertible  Bond  Index--currently  includes 71 bonds and 29
preferreds.   The  original  list  of  names  was  generated  by  screening  for
convertible  issues of $100  million or greater  in market  capitalization.  The
index is priced monthly.

Salomon Brothers GNMA  Index--includes  pools of mortgages originated by private
lenders and guaranteed by the mortgage pools of the Government National Mortgage
Association.

Salomon Brothers High-Grade  Corporate Bond  Index--consists of publicly issued,
non-convertible  corporate bonds rated Aa or Aaa. It is a value-weighted,  total
return index, including  approximately 800 issues with maturities of 12 years or
greater.

Lehman  Long-Term  Treasury Bond Index--is  composed of all bonds covered by the
Shearson  Lehman  Hutton  Treasury  Bond  Index with  maturities  of 10 years or
greater.

Merrill Lynch  Corporate & Government  Bond  Index--consists  of over 4,500 U.S.
Treasury, Agency and investment grade corporate bonds.

Lehman   Corporate   (Baa)  Bond   Index--all   publicly   offered   fixed-rate,
nonconvertible  domestic  corporate bonds rated Baa by Moody's,  with a maturity
longer  than 1 year and with  more  than $25  million  outstanding.  This  index
includes over 1,000 issues.

Lehman  Brothers  Long-Term  Corporate  Bond  Index--is  a subset of the  Lehman
Corporate  Bond Index  covering all  corporate,  publicly  issued,  fixed-rated,
nonconvertible  U.S.  debt issues rated at least Baa,  with at least $50 million
principal outstanding and maturity greater than 10 years.

Bond Buyer  Municipal Bond Index--is a yield index on current coupon  high-grade
general obligation municipal bonds.

Standard & Poor's Preferred Index--is a yield index based upon the average yield
of four high-grade, non-callable preferred stock issues.

NASDAQ Industrial Index--is composed of more than 3,000 industrial issues. It is
a  value-weighted  index  calculated  on price  change only and does not include
income.

Composite  Index--70%  Standard  & Poor's  500 Index and 30%  NASDAQ  Industrial
Index.


Composite  Index--65%  Lehman Long-Term  Corporate AA or Better Bond Index and a
35% weighting of a blended equity  composite (75% Standard & Poor's/BARRA  Value
Index,  12.5% Standard and Poor's  Utilities  Index, and 12.5% Standard & Poor's
Telephone Index).

Composite  Index--65%  Standard  and Poor's  500 Index and 35% Lehman  Long-Term
Corporate AA or Better Bond Index.

Lehman  Long-Term  Corporate AA or Better Bond  Index--consists  of all publicly
issued,  fixed  rate,  nonconvertible   investment  grade,   dollar-denominated,
SEC-registered corporate debt rated AA or AAA.

                                      B-16

<PAGE>


Lehman  Brothers  Aggregate Bond Index--is a market weighted index that contains
individually priced U.S. Treasury,  agency, corporate, and mortgage pass-through
securities  corporate rated BBB- or better. The Index has a market value of over
$4 trillion.

Lehman Brothers Mutual Fund Short (1-5) Government/Corporate  Index--is a market
weighted index that contains  individually  priced U.S.  Treasury,  agency,  and
corporate  investment grade bonds rated BBB- or better with maturities between 1
and 5 years. The index has a market value of over $1.6 trillion.

Lehman Brothers Mutual Fund Intermediate (5-10) Government/Corporate Index--is a
market weighted index that contains  individually priced U.S. Treasury,  agency,
and corporate  securities rated BBB- or better with maturities  between 5 and 10
years. The index has a market value of over $700 billion.


Lehman  Brothers  Long (10+)  Government/Corporate  Index--is a market  weighted
index that contains  individually  priced U.S.  Treasury,  agency, and corporate
securities rated BBB- or better with maturities greater than 10 years. The index
has a market value of over $900 billion.

Lipper Small  Company  Growth Fund  Average--the  average  performance  of small
company  growth  funds as defined by Lipper  Analytical  Services,  Inc.  Lipper
defines a small  company  growth fund as a fund that by  prospectus or portfolio
practice,  limits its  investments  to companies on the basis of the size of the
company. From time to time, Vanguard may advertise using the average performance
and/or the average  expense ratio of the small company growth funds.  (This fund
category was first  established in 1982. For years prior to 1982, the results of
the Lipper Small Company Growth category were estimated using the returns of the
Funds that constituted the Group at its inception.)


Lipper Balanced Fund  Average--an  industry  benchmark of average balanced funds
with  similar  investment   objectives  and  policies,  as  measured  by  Lipper
Analytical Services, Inc.

Lipper  Non-Government  Money  Market Fund  Average--an  industry  benchmark  of
average non-government money market funds with similar investment objectives and
policies, as measured by Lipper Analytical Services, Inc.

Lipper  Government Money Market Fund Average--an  industry  benchmark of average
government money market funds with similar  investment  objectives and policies,
as measured by Lipper Analytical Services, Inc.

                               GENERAL INFORMATION

Description of Shares and Voting Rights

   The Fund was established as a "business trust" under Pennsylvania law under a
Declaration  of Trust dated May 16, 1984.  The  Declaration of Trust permits the
Trustees to issue an unlimited number of shares of beneficial interest,  without
par value,  from an  unlimited  number of  separate  classes  ("Portfolios")  of
shares. Currently the Fund is offering shares of two Portfolios.


   The shares of each Portfolio are fully paid and non-assessable, except as set
forth  on page  18  under  "Shareholder  and  Trustee  Liability,"  and  have no
preference as to conversion,  exchange, dividends, retirement or other features.
The shares have no  preemptive  rights.  The shares have  non-cumulative  voting
rights,  which means that the holders of more than 50% of the shares  voting for
the election of Trustees can elect 100% of the Trustees if they choose to do so.
A shareholder is entitled to one vote for each full share held (and a fractional
vote for each fractional share held),  then standing in his name on the books of
the Fund. On any matter submitted to a vote of  shareholders,  all shares of the
Fund then  issued and  outstanding  and  entitled to vote,  irrespective  of the
class,  shall  be voted  in the  aggregate  and not by  class:  except  (i) when
required  by the  Investment  Company  Act of  1940,  shares  shall  be voted by
individual  class;  and (ii) when the matter  does not affect any  interest of a
particular  class, then only shareholders of the affected class or classes shall
be entitled to vote thereon.

                                      B-17

<PAGE>


   The Fund will continue without limitation of time, provided however that:

      1) Subject to the majority  vote of the holders of shares of any Portfolio
   of the Fund outstanding,  the Trustees may sell or convert the assets of such
   Portfolio  to  another  investment  company  in  exchange  for shares of such
   investment   company,   and  distribute   such  shares,   ratably  among  the
   shareholders of such Portfolio; and

      2)  Subject  to the  majority  of  shares  of any  Portfolio  of the  Fund
   outstanding,  the Trustees may sell and convert into money the assets of such
   Portfolio and distribute  such assets ratably among the  shareholders of such
   Portfolio.

   Upon  completion  of  the  distribution  of  the  remaining  proceeds  or the
remaining assets of any Portfolio as provided in paragraphs 1) and 2) above, the
Fund shall  terminate as to that  Portfolio and the Trustees shall be discharged
of any and all further liabilities and duties hereunder and the right, title and
interest of all parties shall be cancelled and discharged.

Shareholder and Trustee Liability

   Under   Pennsylvania  law,   shareholders  of  a  trust  may,  under  certain
circumstances,  be held personally liable as partners for the obligations of the
Trust.  Therefore,  the  Declaration of Trust contains an express  disclaimer of
shareholder  liability  for acts or  obligations  of the Fund and requires  that
notice of such disclaimer be given in each agreement,  obligation, or instrument
entered into or executed by the Fund or the Trustees.  The  Declaration of Trust
provides for  indemnification  out of the Fund property of any shareholder  held
personally liable for the obligations of the Fund. The Declaration of Trust also
provides that the Fund shall, upon request, assume the defense of any claim made
against any  shareholder  for any act or  obligation of the Fund and satisfy any
judgment thereon.  Thus, the risk of a shareholder  incurring  financial loss on
account of shareholder  liability is limited to  circumstances in which the Fund
itself would be unable to meet its obligations. The Trustees and Officers of the
Fund  believe  that,  in view of the above,  the risk of personal  liability  to
shareholders is remote.

   The  Declaration  of Trust  further  provides  that the Trustees  will not be
liable for errors of judgment  or  mistakes  of fact or law,  but nothing in the
Declaration of Trust protects a Trustee  against any liability to which he would
otherwise  be  subject  by reason  of  willful  misfeasance,  bad  faith,  gross
negligence,  or reckless  disregard of the duties involved in the conduct of his
office.

                              FINANCIAL STATEMENTS


   The Fund's  financial  statements  as of and for the year ended  December 31,
1997,  appearing  in the Fund's 1997  Annual  Reports to  Shareholders,  and the
reports thereon of Price Waterhouse LLP, independent accountants, also appearing
therein,   are  incorporated  by  reference  in  this  Statement  of  Additional
Information.

                                      B-18



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