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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 H6KtvPBYvsdqsFTNJBEsTUt3ESWgKdeeiLyr9fiJTkXcoXU+GiykOjfc8VVCNjAm
 t69B7xe6ecAsJG/rs8KKLg==

<SEC-DOCUMENT>0001209191-03-021829.txt : 20030916
<SEC-HEADER>0001209191-03-021829.hdr.sgml : 20030916
<ACCEPTANCE-DATETIME>20030916164659
ACCESSION NUMBER:		0001209191-03-021829
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030912
FILED AS OF DATE:		20030916

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DOTY ELMER L
		CENTRAL INDEX KEY:			0001241599

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16821
		FILM NUMBER:		03897985

	BUSINESS ADDRESS:	
		STREET 1:		UNITED DEFENSE INDUSTRIES INC
		STREET 2:		1525 WILSON BLVD.
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22209

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITED DEFENSE INDUSTRIES INC
		CENTRAL INDEX KEY:			0001051719
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS TRANSPORTATION EQUIPMENT [3790]
		IRS NUMBER:				522059782
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1525 WILSON BLVD
		STREET 2:		SUITE 700
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22209-2411
		BUSINESS PHONE:		7033126100

	MAIL ADDRESS:	
		STREET 1:		1525 WILSON BLVD
		STREET 2:		SUITE 700
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22209-2411
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-09-12</periodOfReport><notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0001051719</issuerCik>
        <issuerName>UNITED DEFENSE INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>UDI</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001241599</rptOwnerCik>
            <rptOwnerName>DOTY ELMER L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O UNITED DEFENSE INDUSTRIES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1525 WILSON BOULEVARD, SUITE 700</rptOwnerStreet2>
            <rptOwnerCity>ARLINGTON</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22209</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Vice President</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>common stock</value></securityTitle><transactionDate><value>2003-09-12</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>5</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value>E</value></transactionTimeliness><transactionAmounts><transactionShares><value>20000</value></transactionShares><transactionPricePerShare><value>4.44</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>20000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><o
wnershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>common stock</value></securityTitle><transactionDate><value>2003-09-12</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>5</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value>E</value></transactionTimeliness><transactionAmounts><transactionShares><value>20000</value></transactionShares><transactionPricePerShare><value>28.36</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>0</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></own
ershipNature></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>option to purchase common stock</value></securityTitle><conversionOrExercisePrice><value>4.44</value></conversionOrExercisePrice><transactionDate><value>2003-09-12</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>5</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value>E</value></transactionTimeliness><transactionAmounts><transactionShares><value>20000</value></transactionShares><transactionPricePerShare><value>4.44</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F1" /></exerciseDate><expirationDate><value>2011-01-20</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>comon stock</value></underly
ingSecurityTitle><underlyingSecurityShares><value>20000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>47500</value><footnoteId id="F2" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Of this amount, 3,375 shares became exercisable on December 31, 2001 and 3,375 shares became exercisable on December 31, 2002.  In addition, 10,125 shares became exercisable within 30 days of December 31, 2001 and the remaining 3,125 shares became exercisable within 30 days of December 31, 2002, upon the Company's achievement of certain financial performance targets for the 2001 and 2002 fiscal years.</footnote><footnote id="F2">The option to purchase up to 3,375 shares became or will become exercisable on each of December 31, 2001, 2002, 2003, 2004 and 2005.  Of these a
mounts, Mr. Doty has exercised 6,750.  The option to purchase up to 10,125 shares became or will become exercisable within 30 days of each of December 31, 2001, 2002, 2003, 2004 and 2005 if the Company achieves certain financial performance targets in each fiscal year.  Of these amounts, Mr. Doty has exercised 13,250.    </footnote></footnotes><remarks></remarks><ownerSignature><signatureName>\s\ David V. Kolovat
as attorney in fact</signatureName><signatureDate>2003-09-16</signatureDate></ownerSignature></ownershipDocument>

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</SEC-DOCUMENT>
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