Our Forces - Department of Defense

The Department of Defense provides the military forces needed to deter war and ensure our nation's security. Skiptomaincontent(PressEnter). OurForcesTheArmy,MarineCorps,Navy,AirForce,SpaceForceandCoastGuardarethearmedforcesoftheUnitedStates.TheArmyNationalGuardandtheAirNationalGuardarereservecomponentsoftheirservicesandoperateinpartunderstateauthority. Chooseasealbelowtolearnmore:ArmyMarineCorpsNavyAirForceSpaceForceCoastGuardNationalGuard ArmyThelargestandoldestserviceintheU.S.military,theArmyprovidesthegroundforcesthatprotecttheUnitedStates.LearnMore MarineCorpsAcomponentoftheDepartmentoftheNavy,theMarineCorpsmaintainsamphibiousandgroundunitsforcontingencyandcombatoperations.LearnMore NavyOn,aboveandbelowthewater,theNavyisAmerica’sforward-deployedforceandisamajordeterrenttoaggressionaroundtheworld.LearnMore AirForceTheAirForceprovidesarapid,flexible,andlethalairandspacecapabilitythatcandeliverforcesanywhereintheworldwithinhours.LearnMore SpaceForceTheSpaceForceorganizes,trains,andequipsspaceforcesinordertoprotectU.S.andalliedinterestsinspaceandtoprovidespacecapabilitiestothejointforce.LearnMore CoastGuardTheCoastGuardprovideslawandmaritimesafetyenforcement,marineandenvironmentalprotectionandmilitarynavalsupport.PartoftheDepartmentofHomelandSecurityduringpeacetime,theCoastGuardoperatesundertheNavyduringtimesofwar.LearnMore NationalGuardComprisedoftheArmyNationalGuardandAirNationalGuard,theNationalGuardisaversatileforce,supportingcombatmissions,domesticemergencies,humanitarianefforts,homelandsecurityoperationsandmore.LearnMore Defense.gov HomeNewsSpotlightsAbout HelpfulLinks LiveEventsTodayinDODContractsFortheMediaContact Resources DODResourcesHelpCenterDOD/MilitaryWebsitesInsigniaAgencyFinancialReport Popular FY2023DefenseBudgetCoronavirus:DODResponseArtificialIntelligenceDODSpaceStrategy TheDepartmentofDefenseprovidesthemilitaryforcesneededtodeterwarandensureournation'ssecurity. EnterYourSearchTerms HostedbyDefenseMediaActivity-WEB.mil