List of components of the U.S. Department of Defense

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Department of Defense

Seal of the United States Department of Defense.svg

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 leads from the president (as commander-in-chief) through the secretary of defense down to the newest recruits. [2] [3] The United States Armed Forces are organized through the United States Department of Defense, which oversees a complex structure of joint command and control functions with many units reporting to various commanding officers. 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.

Contents

Office of the Secretary of Defense

Secretary of Defense

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]

Organization of the Joint Chiefs of Staff and Joint Staff

Joint Staff

Source: The Joint Staff [21]

Joint Agencies

Military Departments

Department of the Army

Army Secretariat

Source: Army Secretariat [22]

The Army Staff

Source: Headquarters, Department of the Army [23]

Army Commands (ACOM)

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]

Army Service Component Commands (ASCC)

§ Commands

Direct Reporting Units (DRU)

Source: Organization [29]

Source: Major Subordinate Commands [30]

Source: Our Mission [31]

Source: Locations [32]

Source: Organization: Understanding the Army's Structure [33]

Department of the Navy

Basic Organization Chart of the United States Department of the Navy Department of the Navy Basic Org Chart.png
Basic Organization Chart of the United States Department of the Navy
Basic Organization Chart of the Shore Establishment of the United States Navy Us Navy Shore Establishment Org Chart.png
Basic Organization Chart of the Shore Establishment of the United States Navy
Basic Organization Chart of the Operating Forces of the U.S. Navy US Navy Operating Forces Org Chart.png
Basic Organization Chart of the Operating Forces of the U.S. Navy
Organization Chart of the Office of the Chief of Naval Operations US Navy Office of Chief Naval Operations Org Chart.png
Organization Chart of the Office of the Chief of Naval Operations
Organization Chart of the Office of the Secretary of the Navy US SECNAV org chart.png
Organization Chart of the Office of the Secretary of the Navy

Office of the Secretary of the Navy

Office of the Chief of Naval Operations

Headquarters Marine Corps

Organization of HQMC, 2006 Marine Corps structure.svg
Organization of HQMC, 2006

Department of the Air Force

Office of the Secretary of the Air Force

Air Staff

Air Staff Organizational Chart Airstaff.png
Air Staff Organizational Chart

Space Staff

Badge of the Space Staff Space Staff Identification Badge.png
Badge of the Space Staff

Commands

Unified combatant commands: Functional

Cyber Command (USCYBERCOM)

Source: Our Service Cyber Partners [34]

Special Operations Command (USSOCOM)

Source: Enterprise [35]

Strategic Command (USSTRATCOM)

Order of battle

Source: About USSTRATCOM [36]

Transportation Command (USTRANSCOM)

Order of battle

Source: USTRANSCOM [39]


Unified combatant commands: Geographic

Africa Command (USAFRICOM)

Source: United States Africa Command [40]

Central Command (USCENTCOM)

Source: Unified Commands, CENTCOM & Components [41]

European Command (USEUCOM)

Order of battle

Source: Our Forces [42]

Northern Command (USNORTHCOM)

Order of battle

Initiatives

  • Homeland Defense Academic Symposium
  • North American Defense and Security Academic Alliance (NADSAA)
  • Women, Peace and Security (WPS)

Source: Our Story [43]

Indo-Pacific Command (USINDOPACOM)

Order of battle

Source: USINDOPACOM Components [44]

Southern Command (USSOUTHCOM)

Direct Reporting Units

Source: About us [45]

Space Command (USSPACECOM)

Source: Warfighting Units [46]

Service component commands

Army Forces Command (FORSCOM)

Air Force Air Combat Command (ACC) (Langley AFB, VA)

Fleet Forces Command (USFFC) (Norfolk NB, VA)

Marine Corps Forces Command (COMMARFORCOM) (Norfolk NB, VA)

U.S. Forces Azores (USAFORAZ) (Lajes Field, Azores)



Source: Combatant Commands [50]

See also

References

  1. ↑ "Defence Expenditure of NATO Countries (2011-2018)" (PDF). Archived (PDF) from the original on 30 October 2018. Retrieved 6 May 2019.
  2. ↑ "Functions of the Department of Defense and Its Major Components" (PDF). Defense Technical Information Center. Archived from the original (PDF) on March 22, 2011.
  3. ↑ "U.S. Department of Defense Organization Chart". DoD Public Website. Archived from the original on September 27, 2010.
  4. ↑ "OUSD-C Leadership". About OUSD-C. United States Department of Defense. Archived from the original on July 7, 2025. Retrieved July 7, 2025.
  5. ↑ "OUSD A&S Organizations" (PDF). Acquisition & Sustainment. United States Department of Defense. Archived from the original on July 1, 2025. Retrieved July 7, 2025.
  6. ↑ "tricare.mil". Archived from the original on 2010-04-09. Retrieved 2011-12-10.
  7. ↑ "Organizational Chart". U.S. Department of Defense. Retrieved 11 September 2014.
  8. ↑ "Organization". Office of the Under Secretary of Defense for Personnel and Readiness. United States Department of Defense. Archived from the original on July 3, 2025. Retrieved July 7, 2025.
  9. ↑ "OUSD Offices". Under Secretary of Defense for Policy. United States Department of Defense. Archived from the original on July 9, 2025. Retrieved July 8, 2025.
  10. ↑ "Organization". Office of the Under Secretary of Defense for Intelligence & Security. United States Department of Defense. Archived from the original on July 9, 2025. Retrieved July 8, 2025.
  11. ↑ "Enterprise". Under Secretary of Defense for Research and Engineering. United States Department of Defense. Archived from the original on July 10, 2025. Retrieved July 10, 2025.
  12. ↑ "Organization". Department of Defense Office of the Inspector General. United States Department of Defense. Archived from the original on July 11, 2025. Retrieved July 10, 2025.
  13. ↑ "DoD General Counsel". Office of General Counsel. United States Department of Defense. Archived from the original on July 11, 2025. Retrieved July 10, 2025.
  14. ↑ "About DoD CIO". Chief Information Officer. United States Department of Defense. Archived from the original on July 11, 2025. Retrieved July 10, 2025.
  15. ↑ "Services and Products". Defense Media Activity. United States Department of Defense. Archived from the original on July 11, 2025. Retrieved July 10, 2025.
  16. ↑ "Organization". Office of the Assistant to the Secretary of Defense for Privacy, Civil Liberties, and Transparency. United States Department of Defense. Archived from the original on July 11, 2025.
  17. ↑ "About PIO/DA&M". Performance Improvement Officer & Director of Administration & Management. United States Department of Defense. Archived from the original on July 8, 2025. Retrieved July 16, 2025.
  18. ↑ "Our Team/Leadership". Defense Innovation Unit. United States Department of Defense. Archived from the original on July 10, 2025. Retrieved July 16, 2025.
  19. ↑ "OSD Organizational Structure". Office of the Secretary of Defense. United States Department of Defense. Archived from the original on July 15, 2025. Retrieved July 16, 2025.
  20. ↑ "Organization Overview". Office of Military Commissions Website. United States Department of Defense. Archived from the original on June 17, 2025. Retrieved August 3, 2025.
  21. ↑ "The Joint Staff". The Joint Chiefs of Staff. United States Department of Defense. Archived from the original on July 24, 2025. Retrieved August 3, 2025.
  22. ↑ "Army Secretariat" (PDF). Office of the Administrative Assistant to the Secretary of the Army. United States Army. August 18, 2025. Archived from the original (PDF) on August 21, 2025. Retrieved August 20, 2025.
  23. ↑ "Headquarters, United States Army" (PDF). Office of the Administrative Assistant to the Secretary of the Army. United States Army. August 4, 2023. Archived from the original (PDF) on July 12, 2025. Retrieved August 20, 2025.
  24. ↑ "Who We Are". Army Futures Command. United States Army. Archived from the original on August 27, 2025. Retrieved August 30, 2025.
  25. ↑ "AMC Major Subordinate Commands". Army Materiel Command. Archived from the original on May 23, 2025. Retrieved August 24, 2025.
  26. ↑ "Army Museum Directory". U.S. Army Center of Military History. United States Army. Archived from the original on August 28, 2025. Retrieved September 1, 2025.
  27. ↑ "Army University Organizational Structure" (PDF). The Army University. United States Army. Archived from the original (PDF) on July 17, 2025. Retrieved September 6, 2025.
  28. ↑ "U.S. Army Training and Doctrine Command". U.S. Army Training and Doctrine Command. United States Army. Archived from the original on September 4, 2025. Retrieved September 5, 2025.
  29. ↑ "Organization". U.S. Army Test and Evaluation Command. United States Army. Archived from the original on May 26, 2025. Retrieved August 21, 2025.
  30. ↑ "Major Subordinate Commands". U.S. Army Intelligence and Security Command. United States Army. Archived from the original on July 29, 2025.
  31. ↑ "Our Mission". Joint Task Force-National Capital Region and The U.S. Army Military District of Washington. United States Army. Archived from the original on January 8, 2025. Retrieved August 22, 2025.
  32. ↑ "Locations". U.S. Army Corps of Engineers. United States Army. Archived from the original on August 25, 2025. Retrieved August 24, 2025.
  33. ↑ "Understanding the Army's Structure". Organization. United States Army. Archived from the original on July 29, 2025. Retrieved August 19, 2025.
  34. ↑ "Our Service Cyber Partners". U.S. Cyber Command. United States Department of Defense. Archived from the original on June 13, 2025. Retrieved August 12, 2025.
  35. ↑ "Enterprise". United States Special Operations Command. United States Department of Defense. Archived from the original on July 29, 2025. Retrieved August 14, 2025.
  36. ↑ "About USSTRATCOM". U.S. Strategic Command. United States Department of Defense. Archived from the original on July 3, 2025. Retrieved August 17, 2025.
  37. ↑ navy.mil [ bare URL PDF ]
  38. 1 2 3 4 5 "SDDC Homepage". army.mil. Archived from the original on 14 March 2011. Retrieved 2 April 2018.
  39. ↑ "USTRANSCOM". United States Department of Defense. Archived from the original on July 12, 2025. Retrieved August 18, 2025.
  40. ↑ "United States Africa Command". United States Department of Defense. Archived from the original on July 29, 2025. Retrieved August 6, 2025.
  41. ↑ "Unified Commands, CENTCOM & Components". U.S. Central Command. United States Department of Defense. Archived from the original on July 16, 2025. Retrieved August 8, 2025.
  42. ↑ "Our Forces". United States European Command. United States Department of Defense. Archived from the original on July 24, 2025. Retrieved August 8, 2025.
  43. ↑ "Our Story". U.S. Northern Command. United States Department of Defense. Archived from the original on July 26, 2025. Retrieved August 9, 2025.
  44. ↑ "USINDOPACOM Components". About USINDOPACOM. United States Department of Defense. Archived from the original on July 18, 2025. Retrieved August 10, 2025.
  45. ↑ "About us". U.S. Southern Command. United States Department of Defense. Archived from the original on July 9, 2025. Retrieved August 11, 2025.
  46. ↑ "Warfighting Units". U.S. Space Command. United States Department of Defense. Archived from the original on June 19, 2025. Retrieved August 13, 2025.
  47. ↑ First Army Division East Archived 2011-10-05 at the Wayback Machine
  48. ↑ "First Army Division West". army.mil. Archived from the original on 11 October 2009. Retrieved 2 April 2018.
  49. ↑ army.mil [ dead link ]
  50. ↑ "Combatant Commands". United States Department of Defense. Archived from the original on July 11, 2025. Retrieved August 5, 2025.
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