DEFA14A

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                                  SCHEDULE 14A
                                 (RULE 14a-101)

                     INFORMATION REQUIRED IN PROXY STATEMENT

                            SCHEDULE 14A INFORMATION

                  PROXY STATEMENT PURSUANT TO SECTION 14(A) OF
                       THE SECURITIES EXCHANGE ACT OF 1934


Filed by the Registrant [X]
Filed by a Party other than the Registrant [_]

Check the appropriate box:

[_]  Preliminary Proxy Statement
[_]  Confidential, for Use of the Commission Only (as permitted by Rule
     14a-6(e)(2))
[_]  Definitive Proxy Statement
[_]  Definitive Additional Materials
[X]  Soliciting material under Rule 14a-12


                        ANTEON INTERNATIONAL CORPORATION
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                (Name of Registrant as Specified In Its Charter)


- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

PAYMENT OF FILING FEE (Check the appropriate box):
[X]  No fee required.
[_]  Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
1)   Title of each class of securities to which transaction applies:____________
2)   Aggregate number of securities to which transaction applies:_______________
3)   Per unit price or other underlying value of transaction computed pursuant
     to Exchange Act Rule 0-11 (Set forth the amount on which the filing fee is
     calculated and state how it was determined):_______________________________
4)   Proposed maximum aggregate value of transaction:___________________________
5)   Total fee paid:____________________________________________________________
     [_]  Fee paid previously with preliminary materials.
     [_]  Check box if any part of the fee is offset as provided by Exchange Act
          Rule 0-11(a)(2) and identify the filing for which the offsetting fee
          was paid previously. Identify the previous filing by registration
          statement number, or the Form or Schedule and the date of its filing.
1)   Amount Previously Paid:____________________________________________________
2)   Form, Schedule or Registration Statement No.:______________________________
3)   Filing Party:
4)   Date Filed:_______________________________________________

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EX-99

                                                                    EXHIBIT 99.1
                                                                    ------------


To All "Team" Anteon Employees:

                  Yesterday, the Anteon Board of Directors approved the sale of
the company to General Dynamics. I want to be the first person to tell you about
the transaction and why your executive team fully supports it. I'm going to tell
you how this will enhance our stature in the marketplace, and how it will ensure
that our customers and employees continue to be the most important parts of our
business model.

                  Over the past ten years, Anteon has been one of the most
successful companies in the federal services marketplace. What made us so? In
our opinion, it's a short list of critical elements: first and foremost,
attracting great people and giving them the opportunity to succeed; appropriate
investment of our internal resources; dedication to our customers' missions;
internal integration; branding our success; and teamwork. We have mixed these
attributes to perfection, creating a high growth engine that has captured
leading positions in some of the most important national security
markets...missile defense, intelligence, simulation and training, secure
credentialing, ship design and modernization; and many others. However, our work
is not done.

                  For the past eighteen months, we have been briefing our board
of directors on the need for Anteon to achieve "tier one" status. Because we
believe the systems integration and services market is moving rapidly in the
direction of the mega players, particularly in the mission systems and
warfighter support arena, we set Anteon's sights on achieving this status. There
are a number of ways to accomplish this, of course, including: internal growth;
large acquisitions; mergers of equals; and being acquired by a tier one company.
We told the board that we would not endorse an effort to put the company up for
sale and, so, the last year and a half has been dedicated to searching for
larger companies to acquire, seeking merger partners and, of course, growing
organically as fast as we could reasonably do so. We have met with many
companies about their strategic objectives and corporate goals. The right
transaction, a strategic deal that would create market penetration and be right
for our employees and customers, continued to elude us. In the meantime, you
have all done a superb job of serving the customer, growing the business, and
advancing our position in the market.

                  A short while ago, we were approached by several large "tier
one" companies that wanted to talk about acquiring Anteon. As officers of a
public company, we have a fiduciary responsibility to carefully consider
opportunities that could lead to maximizing shareholder value, and we have a
responsibility to advise our board of directors when such an opportunity
presents itself. We thought deeply about current market trends as well as the
opportunity to institutionalize the national security profile created by Anteon
over these many years. We met with General Dynamics and listened to their
strategic rationale for such a transaction, and we were more than intrigued. As
we talked about a union, it became apparent to us that General Dynamics was
truly a giant in the aerospace and defense world, and that they had a void when
it came to mission systems and integration services for DoD, military
intelligence systems, DHS, and civilian agency IT...a void that Anteon filled
perfectly. In fact, General Dynamics has a first class IT network
services/communications group that fills a void we have had here at



Anteon  for a long  time.  In  short,  after  much  discussion  between  our two
management  teams,  it became  evident that this was an opportunity to marry our
world class systems  integration/engineering and IT services program base with a
global tier one  aerospace and defense brand name. We believe this union will be
very  beneficial  for both of the  companies,  employees  and  customers  alike.
Together we will be a formidable competitor for large scale opportunities in the
defense, intelligence, homeland security and civilian agencies markets.

                  Now it's time to focus on the future. Together, we can
continue the great legacy Anteon has created over these many years of
dedication, loyalty, and superb performance for our customers. We are going to
operate as a wholly-owned subsidiary of General Dynamics. Tell your customers
that they are going to get the same high level of support from you they have
become accustomed to receiving. Tell them we expect to be able to support their
broader mission requirements with expanded technical capabilities. We are a
company on the move, positioning our people to serve the requirements of the
21st century. We are a company of patriots serving our nation's interests around
the globe, and proud of it.

                  In the weeks to come, we will communicate with you regarding
all aspects of this transaction. Your questions will be answered and the
strategy will begin to unfold. In the meantime, we need to stick to our business
at hand...pursuing our new opportunities pipeline and focusing on performance
and customer satisfaction.



                  Joe Kampf

                  President and CEO



CAUTIONARY LANGUAGE CONCERNING FORWARD-LOOKING STATEMENTS

                  Statements herein regarding the proposed transaction between
Anteon International Corporation and General Dynamics Corporation, the expected
timetable for completing the transaction, future financial and operating
results, benefits and synergies of the transaction, future opportunities for the
combined company and any other statements about Anteon International Corporation
management's future expectations constitute forward looking statements within
the meaning of the Private Securities Litigation Reform Act of 1995. Such
statements are based upon the current beliefs and expectations of Anteon
International Corporation's management and are subject to significant risks and
uncertainties. There are a number of important factors that could cause actual
results or events to differ materially from those indicated by such forward
looking statements, including: the ability to obtain governmental approvals of
the transaction on the proposed terms and schedule and the failure of Anteon
International Corporation stockholders to approve the transaction. Additional
factors that may affect future results are contained in Anteon International
Corporation's filings with the



Securities and Exchange Commission ("SEC"),  including its Annual Report on Form
10-K for the year ended December 31, 2004,  which are available at the SEC's Web
sitehttp://www.sec.gov.  The  information set forth herein speaks only as of the
date hereof,  and Anteon  International  Corporation  disclaims any intention or
obligation to update any forward looking  statements as a result of developments
occurring after the date hereof.

IMPORTANT ADDITIONAL INFORMATION WILL BE FILED WITH THE SEC

                  In connection with the proposed transaction, Anteon
International Corporation plans to file with the SEC a Proxy Statement.
INVESTORS AND SECURITY HOLDERS OF ANTEON INTERNATIONAL CORPORATION ARE URGED TO
READ THE PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC
WHEN THEY ARE AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT
ANTEON INTERNATIONAL CORPORATION, THE PROPOSED TRANSACTION AND RELATED MATTERS.
The final Proxy Statement will be mailed to stockholders of Anteon International
Corporation. Investors and security holders of Anteon International Corporation
will be able to obtain copies of the Proxy Statement, when they become
available, as well as other filings with the SEC that will be incorporated by
reference into such documents, containing information about Anteon International
Corporation, without charge, at the SEC's Internet site (http://www.sec.gov .
These documents may also be obtained for free from Anteon International
Corporation by directing a request to Anteon International Corporation, Investor
Relations, 3211 Jermantown Road, Fairfax, Virginia22030-2801or at Anteon
International Corporation's Investor Relations page on its corporate website
atwww.anteon.com.

PARTICIPANTS IN SOLICITATION

                  Anteon International Corporation and its respective directors
and executive officers and other members of management and employees may be
deemed to be participants in the solicitation of proxies from Anteon
International Corporation's stockholders in respect of the proposed transaction.
Information regarding Anteon International Corporation's participants is
available in Anteon International Corporation's proxy statement, dated April 22,
2005, for its 2005 annual meeting of stockholders, which is filed with the SEC.
Additional information regarding the interests of such participants will be
included in the Proxy Statement to be filed with the SEC.