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


The chain of command of the U.S. Department of Defense leads from the president through the secretary of defense down to the newest recruits. 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.

Office of the Secretary of Defense

Secretary of Defense
Source: OUSD-C Leadership
Source: OUSD A&S Organizations
Source: Organization: Office of the Under Secretary of Defense for Personnel and Readiness
Source: Under Secretary of Defense for Policy
Sources: Office of the Under Secretary of Defense for Intelligence & Security and Under Secretary of Defense for Intelligence and Security.
Source: Under Secretary of Defense for Research and Engineering
Source: Department of Defense Office of Inspector General
Source: Department of Defense General Counsel
Source: About DoD CIO
Source: Defense Media Activity
Source: Office of the Assistant to the Secretary of Defense for Privacy, Civil Liberties, and Transparency
  • Office of the Director of Administration and Management
  • * Information Management & Technology
  • ** User Engagement Directorate
  • ** Digital Strategic Planning Directorate
  • ** Program Analysis and Asset Planning Directorate
  • * Performance Improvement Directorate
  • ** Strategic Planning & Performance Management
  • ** Defense Management & Performance Improvement
  • ** Enterprise Risk Management
  • ** Audit Management
  • ** Governance, Policy, & Stakeholder Outreach
  • ** Defense Management Analysis
  • *Pentagon Force Protection Agency
  • *Washington Headquarters Services
Source: Performance Improvement Officer & Director of Administration & Management
  • Defense Innovation Unit
  • * People, Finance and Management
  • * Commercial Operations
  • * Strategy, Policy, and National Security Partnerships
  • * Military Directorate
  • * Technology Platforms and Developer Ecosystem
  • * Acquisitions
  • * Artificial Intelligence and Machine Learning Portfolio
  • * Autonomy Portfolio
  • * Cyber and Telecommunications Portfolio
  • * Emerging Technology Portfolio
  • * Energy Portfolio
  • * Human Systems Portfolio
  • * Space Portfolio
Source: Defense Innovation Unit
Source for all direct reports above: OSD Organizational Structure
Source: Organization Overview

Organization of the Joint Chiefs of Staff and Joint Staff

Joint Staff
Source: The Joint Staff
Joint Agencies

Military Departments

Department of the Army

Army Secretariat

Source: Army Secretariat

The Army Staff

Source: Headquarters, Department of the Army

Army Commands (ACOM)

Source: Who We Are
Source: AMC Major Subordinate Commands
Sources:
Museums
Army University Organizational Structure
U.S. Army Training and Doctrine Command

Army Service Component Commands (ASCC)

Direct Reporting Units (DRU)

Source: Organization
Source: Major Subordinate Commands
Source: Our Mission
Source: Locations
Source: Organization: Understanding the Army's Structure

Department of the Navy

Navy Secretariat

Source: Organizations

Naval Operations

Source: Navy

Marine Corps Headquarters

Sources:
Director, Marine Corps Staff
Training and Education Command

Department of the Air Force

Air Force Secretariat

Air Staff

Major Commands

Source: Air Force Senior Leaders

Direct Reporting Units

Field Operating Agencies

Named Establishments

Named Units

Source:

Space Staff

Source: Leadership

Space Force Field Commands

Space Force Named Organizations

Space Force Direct Reporting Units

Source: Space Force Organizational Records

Commands

Cyber Command (USCYBERCOM)

Source: Our Service Cyber Partners

Special Operations Command (USSOCOM)

Source: Enterprise

Strategic Command (USSTRATCOM)

Order of battle

Source: About USSTRATCOM

Transportation Command (USTRANSCOM)

Order of battle

Source: USTRANSCOM

Unified combatant commands: Geographic

Africa Command (USAFRICOM)

Source: United States Africa Command

Central Command (USCENTCOM)

Source: Unified Commands, CENTCOM & Components

European Command (USEUCOM)

Order of battle

Source: Our Forces

Northern Command (USNORTHCOM)

Order of battle

Initiatives

  • Homeland Defense Academic Symposium
  • North American Defense and Security Academic Alliance
  • Women, Peace and Security
Source: Our Story

Indo-Pacific Command (USINDOPACOM)

Order of battle

Source: USINDOPACOM Components

Southern Command (USSOUTHCOM)

Direct Reporting Units

Source: About us

Space Command (USSPACECOM)

Source: Warfighting Units

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