scope:

PURPOSE. This Directive:

a. Reissues DoD Directive (DoDD) 5100.1 (Reference (a)).

b. Establishes the 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 Strategy (References (b), (c), and (d)), in accordance with title 10, United States Code (U.S.C.) (Reference (e)).

APPLICABILITY. This Directive applies to OSD, the Military Departments, the Office of the Chairman of the Joint Chiefs of Staff and the Joint Staff, the Combatant Commands, the Office of the Inspector General 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").