+ Department of DefenseCommander-in-Chief:President of the United States,Donald TrumpSecretary of Defense:Pete HegsethChairman of the Joint Chiefs of Staff:General Dan Caine, USAFMilitary budget:$718 billion (2018)Employees:700,000 civilian2.8 million military (2008) The chain of command of the U.S. Department of Defense (DoD) leads from the president (as commander-in-chief) 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 Deputy Secretary of Defense Office of the Under Secretary of Defense (Comptroller)/Chief Financial Officer of the Department of Defense (USD-C) Deputy Under Secretary of Defense (Comptroller) Deputy Comptroller for Program Budget (PB) Director, Defense Contract Audit Agency (DCAA) Director, Defense Finance and Accounting Service (DFAS) Deputy Comptroller for Enterprise Financial Transformation (EFT) Deputy Comptroller for Budget and Appropriations Affairs (BAA) Deputy Chief Financial Officer (DCFO) Assistant Deputy Chief Financial Officer (ADCFO) Director, Human Capital and Resource Management (HCRM)
Source: OUSD-C Leadership
Office of the Under Secretary of Defense for Acquisition and Sustainment (OUSD-A&S) Deputy Under Secretary of Defense for Acquisition and Sustainment Office of the Assistant Secretary of Defense for Acquisition (OASD-A) Defense Acquisition University (DAU) Defense Contract Management Agency (DCMA) Office of the Assistant Secretary of Defense for Sustainment (OASD-S) Defense Logistics Agency (DLA) Defense Microelectronics Activity (DMEA) Office of the Assistant Secretary of Defense for Energy, Installations, and Environment (OUSD-EI&E) Office of Local Defense Community Cooperation (OLDCC) Office of the Assistant Secretary of Defense for Nuclear Deterrence, Chemical, and Biological Defense Policy and Programs (OASD-ND-CBD) Defense Threat Reduction Agency (DTRA) Office of the Assistant Secretary of Defense for Industrial Base Policy (OASD-IBP)
Source: OUSD A&S Organizations
Office of the Under Secretary of Defense for Personnel and Readiness (OUSD-P&R) Deputy Under Secretary of Defense for Personnel and Readiness Office of the Assistant Secretary of Defense for Health Affairs (ASD-HA) Health Services Policy and Oversight Health Readiness Policy and Oversight Health Resources Management and Policy Defense Health Agency Military Health System TRICARE Management Activity Uniformed Services University of the Health Sciences Armed Forces Radiobiology Research Institute (AFRRI) Office of the Assistant Secretary of Defense (Manpower and Reserve Affairs) (OASD-M&RA) Deputy Assistant Secretary of Defense for Civilian Personnel Policy Deputy Assistant Secretary of Defense for Military Personnel Policy United States Military Entrance Processing Command (USMEPCOM) Deputy Assistant Secretary of Defense for Military Community and Family Policy Reserve Integration Defense Commissary Agency Department of Defense Education Activity Department of Defense Dependents Schools Office of the Assistant Secretary of Defense for Readiness (ASD-R) Deputy Assistant Secretary of Defense for Readiness Force Readiness (FR) Force Education and Training (FE&T) Force Safety and Occupational Health (FSOH) Defense Human Resources Activity (DHRA) Equal Employment Opportunity Facilities and Security Office of the General Counsel Ombudsman Office of Small Business Programs Strategic Plans and Initiatives Comptroller Human Resources Defense Civilian Personnel Advisory Service (DCPAS) Defense Equal Opportunity Management Institute (DEOMI) Defense Manpower Data Center (DMDC) Defense Personnel Analytics Center (DPAC) Office of People Analytics (OPA) Joint Advertising Marketing Research & Studies (JAMRS) DoD Office of the Actuary Defense Support Services Center (DSSC) Advanced Distributed Learning (ADL) Combating Trafficking in Persons (CTIP) Computer/Electronic Accommodations Program (CAP) Defense Activity for Non-Traditional Education Support (DANTES) Defense Language and National Security Education Office (DLNSEO) Defense Language Institute (DLI) Defense Travel Management Office (DTMO) Employer Support of the Guard and Reserve (ESGR) Federal Voting Assistance Program (FVAP) Investigations and Resolutions Directorate (IRD) Military-Civilian Transition Office (MCTO) Office of Force Resiliency (OFR) Defense Suicide Prevention Office (DSPO) Office for Civil Rights and Equal Opportunity Policy (OCREOP) Sexual Assault Prevention and Response Office (SAPRO) Office of Command Climate and Well-Being Integration (OCCWI) Drug Demand Reduction Program (DDRP) Office of the executive director (OXD) DoD/VA Collaboration Office
Source: Organization: Office of the Under Secretary of Defense for Personnel and Readiness
Office of the Under Secretary of Defense for Policy (OUSD-P) Principal Deputy Under Secretary of Defense for Policy Defense Technology Security Administration (DTSA) Defense Security Cooperation Agency (DSCA) Defense POW/MIA Accounting Agency (DPAA) Office of the Assistant Secretary of Defense for Cyber Policy (ASD-CP) Office of the Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs (ASD-HD&HA) Office of the Assistant Secretary of Defense for Indo-Pacific Security Affairs (ASD-IPSA) Office of the Assistant Secretary of Defense for International Security Affairs (ASD-ISA) Office of the Assistant Secretary of Defense for Nuclear Deterrence, Chemical, and Biological Defense Policy and Programs (ASD-ND-CBD) Defense Threat Reduction Agency (DTRA) Office of the Assistant Secretary of Defense for Space Policy (ASD-SP) Office of the Assistant Secretary of Defense for Special Operations and Low-Intensity Conflict (ASD-SO/LIC) Office of the Assistant Secretary of Defense for Strategy, Plans, and Capabilities (ASD-SPC) Defense Policy Board (DPB) Civilian Harm Mitigation and Response (CHMR)
Source: Under Secretary of Defense for Policy
Office of the Under Secretary of Defense for Intelligence and Security (OUSD-I&S) Defense Intelligence (Warfighter Support) Defense Intelligence (Counterintelligence, Law Enforcement & Security) Defense Intelligence (Collection & Special Programs) Defense Intelligence (Intelligence & Security Programs & Resources) Defense Intelligence Agency (DIA) National Reconnaissance Office (NRO) National Security Agency (NSA) National Geospatial-Intelligence Agency (NGA)
Sources: Office of the Under Secretary of Defense for Intelligence & Security and Under Secretary of Defense for Intelligence and Security.
Office of the Under Secretary of Defense for Research and Engineering (OUSD-R&E) Office of the Assistant Secretary of Defense for Critical Technologies (ASD-CT) Office of the Assistant Secretary of Defense for Mission Capabilities (ASD-MC) Office of the Assistant Secretary of Defense for Science and Technology (ASD-ST) Defense Advanced Research Projects Agency (DARPA) Defense Science Board (DSB) Defense Technical Information Center (DTIC) Scientific and Technical Information Program (STI) Department of Defense Information Analytics Center (DoDIAC) Cyber Security and Information Systems Information Analysis Center (CSIAC) Defense Systems Information Analysis Center (DSIAC) Homeland Defense & Security Information Analysis Center (HDIAC) Defense Threat Reduction Information Analysis Center (DTRIAC) Information Assurance Technology Analysis Center (IATAC) Missile Defense Agency (MDA) Office of Strategic Capital Test Resource Management Center Innovation Steering Group Office of Strategic Intelligence and Analysis Office of Systems Engineering and Architecture Developmental Test Evaluation and Assessment
Source: Under Secretary of Defense for Research and Engineering
Office of the Inspector General (DOD IG) Defense Criminal Investigative Service (DCIS)
Source: Department of Defense Office of Inspector General
Office of the General Counsel of the Department of Defense (DOD-GC) Defense Legal Services Agency (DLSA)
Source: Department of Defense General Counsel
Office of the Chief Information Officer (CIO) Command, Control, & Communications (DCIO-C3) Cybersecurity (DCIO-CS) Information Enterprise (DCIO-IE) Resources & Analysis (DCIO-R&A) Defense Information Systems Agency (DISA)
Source: About DoD CIO
Office of the Assistant to the Secretary of Defense for Public Affairs (ATSD-PA) Defense Media Activity (DMA) Defense Information School (DINFOS) Defense Visual Information Distribution Service (DVIDS) Air Force News Army News Marines News Navy News DoD News American Forces Network (AFN) Stars and Stripes All Hands Magazine Airman Magazine
Source: Defense Media Activity
Office of the Assistant to the Secretary of Defense for Privacy, Civil Liberties, & Transparency (ATSD-PCLT) Privacy & Civil Liberties Directorate (PCLD) Intelligence Oversight Directorate (IOD) Regulatory Directorate (RD) Freedom of Information Act Directorate (FOIA)
Source: Office of the Assistant to the Secretary of Defense for Privacy, Civil Liberties, and Transparency Office of the Director of Administration and Management (DA&M) Information Management & Technology (IM&T) 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 (PFPA) Washington Headquarters Services (WHS)
Source: Performance Improvement Officer & Director of Administration & Management Defense Innovation Unit (DIU) 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
Chief Digital and Artificial Intelligence Office (CDAO) Director of Cost Assessment and Program Evaluation (CAPE) Office of the Assistant Secretary of Defense for Legislative Affairs (ASD-LA) Director of Operational Test and Evaluation (DOT&E) Strategic Capabilities Office
Source for all direct reports above: OSD Organizational Structure
Office of Military Commissions United States Court of Military Commission Review
Source: Organization Overview
Organization of the Joint Chiefs of Staff and Joint Staff
Chairman of the Joint Chiefs of Staff Vice Chairman of the Joint Chiefs of Staff Chief of Staff of the Army Commandant of the Marine Corps Chief of Naval Operations Chief of Staff of the Air Force Chief of Space Operations Chief of the National Guard Bureau
Joint Staff Assistant to the Chairman Senior Enlisted Advisor to the Chairman (SEAC) Joint Staff Inspector General Director, Joint Staff Manpower and Personnel (J-1) Joint Staff Intelligence (J-2) Operations (J-3) Logistics (J-4) Strategy, Plans and Policy (J-5) Command, Control, Communications, & Computers/Cyber (J-6) Joint Force Development (J-7) Force Structure Resources and Assessment (J-8) Directorate of Management
Source: The Joint Staff
Joint Agencies National Guard Bureau (NGB) Joint Personnel Recovery Agency (JPRA) Armed Services Board of Contract Appeals (ASBCA)