1、Department of Defense DIRECTIVE NUMBER 5100.01 December 21,2010 Incorporating Change 1,September 17,2020 CMO SUBJECT:Functions of the Department of Defense and Its Major Components References:See Enclosure 1 1.PURPOSE.This Directive:a.Reissues DoD Directive(DoDD)5100.1(Reference(a).b.Establishes the
2、 functions of the Department of Defense and its major Components,supporting the core mission areas of the Armed Forces,which are broad DoD military operations and activities required to achieve the strategic objectives of the National Security Strategy,National Defense Strategy,and National Military
3、 Strategy(References(b),(c),and(d),in accordance with title 10,United States Code(U.S.C.)(Reference(e).2.APPLICABILITY.This Directive applies to OSD,the Military Departments,the Office ofthe Chairman of the Joint Chiefs of Staff and the Joint Staff,the Combatant Commands,theOffice of the Inspector G
4、eneral of the Department of Defense(IG DoD),the Defense Agencies,the DoD Field Activities,and all other organizational entities within the Department of Defense(hereafter referred to collectively as the“DoD Components”).3.FUNCTIONS OF THE DEPARTMENT OF DEFENSE.As prescribed by higher authority,the D