It has been suggested that List of U.S. Department of Defense agencies be merged into this article. ( Discuss ) Proposed since December 2025. |
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| Commander-in-Chief: | President of the United States, Donald Trump |
| Secretary of Defense: | Pete Hegseth |
| Chairman of the Joint Chiefs of Staff: | General Dan Caine, USAF |
| Military budget: | $718 billion (2018) [1] |
| Employees: | 700,000 civilian 2.8 million military (2008) |
The chain of command of the U.S. Department of Defense leads from the president (as commander-in-chief) through the secretary of defense down to the newest recruits. [2] [3] The Department of Defense oversees a complex structure of joint command and control functions, split generally into administrative and operational chains of command. The following is an incomplete list of the various major military units, commands, and DOD offices and agencies, including civilian and military chains of command.
Source: OUSD-C Leadership [4]
Source: OUSD A&S Organizations [5]
Source: Organization: Office of the Under Secretary of Defense for Personnel and Readiness [8]
Source: Under Secretary of Defense for Policy [9]
Sources: Office of the Under Secretary of Defense for Intelligence & Security [10] and Under Secretary of Defense for Intelligence and Security.
Source: Under Secretary of Defense for Research and Engineering [11]
Source: Department of Defense Office of Inspector General [12]
Source: Department of Defense General Counsel [13]
Source: About DoD CIO [14]
Source: Defense Media Activity [15]
Source: Office of the Assistant to the Secretary of Defense for Privacy, Civil Liberties, and Transparency [16]
Source: Performance Improvement Officer & Director of Administration & Management [17]
Source: Defense Innovation Unit [18]
Source for all direct reports above: OSD Organizational Structure [19]
Source: Organization Overview [20]
Joint Staff
Source: The Joint Staff [21]
Joint Agencies
Source: Army Secretariat [22]
Source: Headquarters, Department of the Army [23]
Source: Who We Are [24]
Source: AMC Major Subordinate Commands [25]
Sources:
Museums [26]
Army University Organizational Structure [27]
U.S. Army Training and Doctrine Command [28]
Source: Organization [29]
Source: Major Subordinate Commands [30]
Source: Our Mission [31]
Source: Locations [32]
Source: Organization: Understanding the Army's Structure [33]
Source: Organizations [34]
Source: Navy [36]
Sources:
Director, Marine Corps Staff [37]
Training and Education Command [38]
Source: Air Force Senior Leaders [39]
Source: [40]
Source: Leadership [41]
Source: Space Force Organizational Records [42]
Source: Our Service Cyber Partners [43]
Source: Enterprise [44]
Source: About USSTRATCOM [45]
Source: USTRANSCOM [48]
Source: United States Africa Command [49]
Source: Unified Commands, CENTCOM & Components [50]
Source: Our Forces [51]
Source: Our Story [52]
Source: USINDOPACOM Components [53]
Source: About us [54]
Source: Warfighting Units [55]
Source: Combatant Commands [59]