Organizational structure of the United States Department of Defense

The Pentagon, headquarters of the United States Department of Defense.

The United States Department of Defense (DoD) has a complex organizational structure. It includes the Army, Navy, the Marine Corps, Air Force, Space Force, the Unified combatant commands, U.S. elements of multinational commands (such as NATO and NORAD), as well as non-combat agencies such as the Defense Intelligence Agency and the National Security Agency. The DoD's annual budget was roughly US$496.1 billion in 2015.[1] This figure is the base amount and does not include the $64.3 billion spent on "War/Non-War Supplementals". Including those items brings the total to $560.6 billion for 2015.[1]

Civilian control over matters other than operations is exercised through the three service departments, the Department of the Army, the Department of the Navy (which includes the Marine Corps), and the Department of the Air Force (which includes the Space Force). Each is led by a service secretary, who is below Cabinet rank.

In wartime, the Department has authority over the Coast Guard, which is under the control of the Department of Homeland Security (DHS) in peacetime. Prior to the creation of DHS, the Coast Guard was under the control of the Department of Transportation, and earlier under the Department of the Treasury. According to the U.S. Code, the Coast Guard is at all times considered one of the six armed services of the United States. During times of declared war (or by Congressional direction), the Coast Guard operates as a part of the Navy; this has not happened since World War II, but members have served in undeclared wars and conflicts since then while the service remained in its peacetime department.

The Pentagon Reservation in Arlington County, Virginia, across the Potomac River from Washington, D.C., is the Department's headquarters. The Department is protected by the Pentagon Force Protection Agency, which ensures law enforcement and security for the Pentagon and various other jurisdictions throughout the National Capital Region (NCR).

Chain of Command[edit]

The President of the United States is, according to the Constitution, the Commander-in-Chief of the U.S. Armed Forces and Chief Executive of the Federal Government. The Secretary of Defense is the "Principal Assistant to the President in all matters relating to the Department of Defense", and is vested with statutory authority (10 U.S.C. § 113) to lead the Department and all of its component agencies, including military command authority second only to the President.

The President and the Secretary of Defense exercise authority and control of the Armed Forces through two distinct branches of the chain of command. One branch (10 U.S.C. § 162) runs from the President, through the Secretary of Defense, to the Unified Combatant Commanders for missions and forces assigned to their commands. The other branch, used for purposes other than operational direction of forces assigned to the Unified Combatant Commands, runs from the President through the Secretary of Defense to the Secretaries of the Military Departments, i.e., the Secretary of the Army (10 U.S.C. § 7013), the Secretary of the Navy (10 U.S.C. § 8013), and the Secretary of the Air Force (10 U.S.C. § 9013). The Military Departments, organized separately within the Department, operate under the authority, direction, and control of the Secretary of that Military Department. The Secretaries of the Military Departments exercise authority through their respective Service Chiefs (i.e., Chief of Staff of the Army, Commandant of the Marine Corps, Chief of Naval Operations, Chief of Staff of the Air Force, and Chief of Space Operations) over forces not assigned to a Unified Combatant Command. Except as otherwise prescribed by law, the Service Chiefs perform their duties under the authority, direction, and control of the Secretaries of their respective Military Departments, to whom they are directly responsible.

In the Goldwater-Nichols Department of Defense Reorganization Act of 1986, Congress clarified the command line to the Unified Combatant Commanders and preserved civilian control of the military. The Act states that the operational chain of command runs from the President to the Secretary of Defense to the Unified Combatant Commanders. The Act permits the President to direct that communications pass through the Chairman of the Joint Chiefs of Staff from the Secretary of Defense and the Unified Combatant Commanders. This authority places the Chairman in the communications chain. Further, the Act gives the Secretary of Defense wide latitude to assign the Chairman oversight responsibilities for the Unified Combatant Commanders' activities.

Civilian control[edit]

Article II Section 2 of the Constitution designates the President as "Commander in Chief" of the Army, Navy and state militias.[2] The President exercises this supreme command authority through the civilian Secretary of Defense, who by federal law is the head of the department, has authority direction, and control over the Department of Defense, and is the principal assistant to the President in all matters relating to the Department of Defense.[3] The Secretary's principal deputy is the equally civilian Deputy Secretary of Defense who is delegated full powers to act for the Secretary of Defense. The Office of the Secretary of Defense (OSD) is the Secretary and Deputy Secretary's civilian staff, which includes several Under Secretaries and Assistant Secretaries of Defense with functional oversight responsibilities. The Secretaries of the Military Departments (i.e. Secretary of the Army, Secretary of the Navy, and Secretary of the Air Force) are subordinate to the Secretary of Defense. They have the authority under Title 10 of the United States Code to conduct all the affairs of their respective departments (Department of the Army, Department of the Navy, and Department of the Air Force) within which the military services are organized.[4] Although subordinate to the Secretary of Defense, they are appointed by, and serve at the pleasure of, the President of the United States. As such, they cannot be removed from office by the Secretary of Defense, but can only be removed unilaterally by the President, or through impeachment by the Congress.

Historically, there have been challenges to civilian control. Most notably, during the Korean War, General Douglas MacArthur ignored civilian instructions regarding advancing troops toward the Yalu River, which triggered an introduction of massive forces from China. Also, on April 5, 1950, Representative Joseph William Martin, Jr., the Minority Leader of the United States House of Representatives, released copies of a letter from MacArthur critical of President Harry S. Truman's limited-war strategy to the press and read it aloud on the floor of the house.[5] President Truman relieved MacArthur of command, and MacArthur then explored political options against Truman.[6] The Revolt of the Admirals is another example in the same era of a challenge to civilian control.

DoD policies and directives protect the policy of civilian control by establishing strict limitations on military members' political activities. For example, DoD Directive 1344.10 prohibits active-duty members of the military from running for office or making political appearances in uniform.[7] However, enforcing this strict separation between the military and politics has been problematic. For example, over the years, many elected officials, including members of Congress, continued serving in the reserves while holding elected office. As another example, at a September 14, 2007, rally for Republican Presidential candidate John McCain in New Hampshire, seven on-duty uniformed Army personnel addressed the gathering.[8] As another example, although DOD Directive 1344.10 prohibits political appearances by active-duty military members in uniform, Virginia Governor Bob McDonnell invited a uniformed Army Staff Sergeant to stand behind him during his televised Republican response to the 2010 State of the Union Address.[9][10]

Components of the Department of Defense[edit]

Program
Secretary of Defense

Deputy Secretary of Defense

Defense Innovation Unit
Assistant to the Secretary of Defense for Public Affairs
*Defense Media Activity
Director of Administration and Management
*Pentagon Force Protection Agency
*Washington Headquarters Services
Assistant Secretary of Defense for Legislative Affairs
Director of Cost Assessment and Program Evaluation
Office of Net Assessment
General Counsel of Defense
*Defense Legal Services Agency
Chief Data and Artificial Intelligence Officer
Chief Information Officer

*Defense Information Systems Agency

Operational Test and Evaluation Directorate
United States Department of the Army
United States Department of the Navy
United States Department of the Air Force
Joint Chiefs of Staff
Acquisition and Sustainment
Under Secretary of Defense for Acquisition and Sustainment
Deputy Under Secretary of Defense for Acquisition and Sustainment
Assistant Secretary of Defense (Acquisition)
*Defense Contract Management Agency
*Defense Acquisition University

*Joint Rapid Acquisition Cell

Assistant Secretary of Defense (Sustainment)
*Director of the Office of Economic Adjustment
*Director of the Defense Logistics Agency
Assistant Secretary of Defense for Energy, Installations, and Environment/Chief Sustainability Officer
*Office of Local Defense Community Cooperation (OLDCC)
Assistant Secretary of Defense (Nuclear, Chemical & Biological Defense Programs)
*Defense Threat Reduction Agency
Assistant Secretary of Defense for Industrial Policy
*Office of Small Business Programs
Joint Production Accelerator Cell

Director of Special Programs

Research and Engineering
Under Secretary of Defense for Research and Engineering

Deputy Under Secretary of Defense for Research and Engineering

Assistant Secretary of Defense for Science and Technology
Assistant Secretary of Defense for Critical Technologies
Assistant Secretary of Defense for Mission Capabilities
Missile Defense Agency
DARPA
Policy
Under Secretary of Defense for Policy

Deputy Under Secretary of Defense for Policy

Assistant Secretary of Defense (Strategy, Plans, and Capabilities)
Assistant Secretary of Defense (International Security Affairs)
*Secretary of Defense Representative in the United States Mission to NATO
*Secretary of Defense Representative to the Organization for Security and Co-operation in Europe
Assistant Secretary of Defense (Homeland Defense) and Global Strategic Affairs
Assistant Secretary of Defense (Special Operations and Low-Intensity Conflict)
Assistant Secretary of Defense (Indo-Pacific Security Affairs)
Defense POW/MIA Accounting Agency
Defense Security Cooperation Agency
Defense Policy Board Advisory Committee
Defense Technology Security Administration
Comptroller
Under Secretary of Defense (Comptroller)/CFO

Deputy Under Secretary of Defense (Comptroller)

Deputy Comptroller (Program/Budget)
Deputy Comptroller (Budget and Appropriation Affairs)
Deputy Comptroller (Enterprise Financial Transformation)
Deputy Chief Financial Officer
Director, Human Capital and Resource Management
Defense Contract Audit Agency
Defense Finance and Accounting Service
Personnel and Readiness
Under Secretary of Defense for Personnel and Readiness

Deputy Under Secretary of Defense for Personnel and Readiness

Joint Advertising Marketing Research & Studies (JAMRS)[11]
Military Deputy to the Under Secretary of Defense (Personnel and Readiness)
*Office of Diversity Management and Equal Opportunity
**Defense Equal Opportunity Management Institute
*Defense Suicide Prevention Office
*Personnel Risk Reduction Office
Assistant Secretary of Defense (Health Affairs)
*Defense Health Agency
*Military Health System[12]
**TRICARE Management Activity[13]
Assistant Secretary of Defense (Manpower and Reserve Affairs)
*Defense Commissary Agency
*Department of Defense Education Activity
**Department of Defense Dependents Schools
*Office of Total Force Planning & Requirements
*Transition to Veterans Program Office
Defense Human Resources Activity
DoD/VA Collaboration Office
Uniformed Services University of the Health Sciences
Office of the Chancellor for Education and Professional Development
Intelligence and Security
Under Secretary of Defense for Intelligence and Security

Deputy Under Secretary of Defense (Intelligence)

Director for Defense Intelligence (Warfighter Support)
Director for Defense Intelligence (Intelligence & Security)
Director for Defense Intelligence (Technical Collection & Special Programs)
Director for Defense Intelligence (Intelligence Strategy, Programs & Resources)
Defense Counterintelligence and Security Agency
Defense Intelligence Agency
National Geospatial-Intelligence Agency
National Security Agency
Central Security Service
National Reconnaissance Office

Defense Agencies[edit]

Defense Agencies within the Department of Defense.

Defense Agencies are established as DoD Components by law, the President, or the Secretary of Defense to provide for the performance, on a DoD-wide basis, of a supply or service activity that is common to more than one Military Department when it is determined to be more effective, economical, or efficient to do so, pursuant to sections 101, 191(a), and 192 of Title 10 of the United States Code or when a responsibility or function is more appropriately assigned to a Defense Agency. Pursuant to section 191(b) Title 10, such organizations are designated as Defense Agencies. Each Defense Agency operates under the authority, direction, and control of the Secretary of Defense, through a Principal Staff Assistant in the Office of the Secretary of Defense.

On 1 March 2003 the Secretary of Defense lost Executive Agent responsibilities for the National Communications System, which was moved to the Department of Homeland Security. However the NCS still centralized its activities within the Department of Defense, since the human resources required by NCS (example: Military Departments) still reside within the Department of Defense, or for retention of practical maintenance. The NCS was finally disestablished in 2012.

Seal or Logo Name Acronym Charter Under the Authority of Headquarters
Defense Advanced Research Projects Agency DARPA DoDD 5134.10 Under Secretary of Defense for Acquisition and Sustainment Arlington, Virginia
Defense Commissary Agency DeCA DoDD 5105.55 Under Secretary of Defense for Personnel and Readiness Fort Gregg-Adams, Virginia
Defense Contract Audit Agency DCAA DoDD 5105.36 Under Secretary of Defense (Comptroller) Fort Belvoir, Virginia
Defense Contract Management Agency DCMA DoDD 5105.64 Under Secretary of Defense for Acquisition and Sustainment Fort Gregg-Adams, Virginia
Defense Finance and Accounting Service DFAS DoDD 5118.05 Under Secretary of Defense (Comptroller) Arlington, Virginia
Defense Information Systems Agency DISA DoDD 5105.19 Chief Information Officer Arlington, Virginia
Defense Intelligence Agency DIA DoDD 5105.21 Under Secretary of Defense for Intelligence Joint Base Anacostia-Bolling, District of Columbia
Defense Legal Services Agency DLSA DoDD 5145.04 General Counsel of the Department of Defense The Pentagon
Defense Logistics Agency DLA DoDD 5105.22 Under Secretary of Defense for Acquisition and Sustainment Fort Belvoir, Virginia
Defense Security Cooperation Agency DSCA DoDD 5105.65 Under Secretary of Defense for Policy The Pentagon
Defense Counterintelligence and Security Agency DCSA Executive Order 13869 Under Secretary of Defense for Intelligence Quantico, Virginia
Defense Threat Reduction Agency DTRA DoDD 5105.62 Under Secretary of Defense for Acquisition and Sustainment Fort Belvoir, Virginia
Missile Defense Agency MDA DoDD 5134.09 Under Secretary of Defense for Acquisition and Sustainment The Pentagon
National Geospatial-Intelligence Agency NGA DoDD 5105.60 Under Secretary of Defense for Intelligence Springfield, Virginia
National Reconnaissance Office NRO DoDD 5105.23 Under Secretary of Defense for Intelligence Chantilly, Virginia

National Security Agency
Central Security Service
NSA/CSS DoDD 5100.20 Under Secretary of Defense for Intelligence Fort Meade, Maryland
Pentagon Force Protection Agency PFPA DoDD 5105.68 Director of Administration and Management The Pentagon

Department of Defense Field Activities[edit]

Department of Defense Field Activities are established as DoD Components by law, the President, or the Secretary of Defense to provide for the performance, on a DoD-wide basis, of a supply or service activity that is common to more than one Military Department when it is determined to be more effective, economical, or efficient to do so, pursuant to sections 101, 191(a), and 192 of Title 10 of the United States Code. Pursuant to section 191(b) of Title 10, such organizations are designated as DoD Field Activities. Each DoD Field Activity operates under the authority, direction, and control of the Secretary of Defense, through a Principal Staff Assistant in the Office of the Secretary of Defense.

Seal or Logo Name Acronym Charter Under the Authority of Headquarters
Defense Media Activity DMA DoDD 5105.74 Assistant to the Secretary of Defense for Public Affairs Fort Meade, MD
Defense POW/MIA Accounting Agency DPAA DoDD 5110.10 Under Secretary of Defense for Policy The Pentagon
Defense Technical Information Center DTIC DoDD 5105.73 Under Secretary of Defense for Acquisition and Sustainment Fort Belvoir, VA
Defense Technology Security Administration DTSA DoDD 5105.72 Under Secretary of Defense for Policy The Pentagon
Department of Defense Education Activity DoDEA DoDD 1342.20 Under Secretary of Defense for Personnel and Readiness Arlington, VA
Department of Defense Human Resources Activity DoDHRA DoDD 5100.87 Under Secretary of Defense for Personnel and Readiness Arlington, VA
Department of Defense Test Resource Management Center TRMC DoDD 5105.71 Under Secretary of Defense for Acquisition and Sustainment
Office of Economic Adjustment OEA DoDD 3030.01 Under Secretary of Defense for Acquisition and Sustainment Arlington, VA
Washington Headquarters Services WHS DoDD 5110.04 Director of Administration and Management The Pentagon

Military Departments[edit]

Department of the Army[edit]

The Department of the Army includes all elements of the U.S. Army

Headquarters, Department of the Army[edit]
Army Field Organizations[edit]
  • Army Commands
  • Army Component Commands
  • Field Operating Agencies
  • Direct Reporting Units

Department of the Navy[edit]

The Department of the Navy includes all elements of the U.S. Navy and the U.S. Marine Corps

OPNAV[edit]
Navy Subordinate Components[edit]
Headquarters Marine Corps[edit]

Department of the Air Force[edit]

The Department of the Air Force includes all elements of the United States Air Force and the United States Space Force

Headquarters Air Force[edit]
Air Force Field Organizations[edit]
Headquarters Space Force[edit]
Space Force Field Organizations[edit]

Organization of the Joint Chiefs of Staff[edit]

Unified Combatant Commands[edit]

There are eleven Unified Combatant Commands; seven regional and four functional. Africa Command became initially operational in October 2007, while Joint Forces Command was officially disestablished on August 4, 2011. Space Command was reestablished in August 2019.

Seal Name Acronym Headquarters Area of Responsibility Other Role of CCDR
United States Africa Command AFRICOM Kelley Barracks, Stuttgart, Germany; to be relocated to African continent or other location TBD Africa excluding Egypt
United States Central Command CENTCOM MacDill Air Force Base, Florida Egypt through the Persian Gulf region, into Central Asia, excluding Israel
United States European Command EUCOM Stuttgart, Germany Europe, including Turkey, and Israel Also Supreme Allied Commander Europe (SACEUR)
United States Northern Command NORTHCOM Peterson Air Force Base, Colorado North American homeland defense and coordinating homeland defense with federal and state civil authorities. Also Commander of North American Aerospace Defense Command (NORAD)
(bilateral U.S.-Canadian military command)
United States Indo-Pacific Command INDOPACOM Camp H. M. Smith, Oahu, Hawaii The Indo-Asia-Pacific region including Hawaii.
United States Southern Command SOUTHCOM Miami, Florida Latin America and the Caribbean excluding Mexico and Puerto Rico
United States Space Command SPACECOM Peterson Air Force Base, Colorado Outer Space
United States Cyber Command CYBERCOM Fort George G. Meade, Maryland Provides cyber operations for the Army, Marine Corps, Navy, and Air Force. Also Director of the National Security Agency
United States Special Operations Command SOCOM MacDill Air Force Base, Florida Provides special operations for the Army, Marine Corps, Navy, and Air Force.
United States Strategic Command STRATCOM Offutt Air Force Base, Nebraska Deters strategic attack and employs forces, as directed, to guarantee the security of our Nation and our Allies.
United States Transportation Command TRANSCOM Scott Air Force Base, Illinois Covers global mobility of all military assets for all regional commands.
The Geographic Commands

In 2007, a new geographical command for Africa was authorized. This proposed significant changes to the areas of responsibility for other adjacent geographical commands as shown in the accompanying graphic.

Office of the Inspector General of the Department of Defense[edit]

Seal of the Inspector General.

The Office of the Inspector General is an independent and objective unit within the Department of Defense that conducts and supervises audits and investigations relating to the programs and operations of the Department of Defense, pursuant to the responsibilities specified in title 5, U.S.C. Appendix and DoDD 5106.01.

National Guard Bureau[edit]

Seal of the National Guard Bureau.

The National Guard Bureau (NGB) is a joint activity of the Department of Defense. The Chief of the National Guard Bureau is a principal advisor to the Secretary of Defense, through the Chairman of the Joint Chiefs of Staff, on matters involving non-federalized National Guard forces, and other matters as determined by the Secretary of Defense. For NGB matters pertaining to the Departments of the Army and Air Force's responsibilities in law or DoD policy, the Secretary of Defense normally exercises authority, direction, and control over the NGB through the Secretaries of the Army and the Air Force. The NGB is the focal point at the strategic level for National Guard matters that are not under the authority, direction, and control of the Secretaries of the Army or Air Force, including joint, interagency, and intergovernmental matters where the NGB acts through other DoD officials as specified in DoDD 5105.77.

References[edit]

  1. ^ a b "United States Department of Defense Fiscal Year 2016 Budget Request / Overview" (PDF). Office of the Under Secretary of Defense (Comptroller) Chief Financial Officer. February 2015. Retrieved 22 December 2016.
  2. ^ "Caselaw: constitution article 2". Retrieved 15 April 2010.
  3. ^ 10 U.S.C. 113
  4. ^ 10 U.S.C. §§ 3013, 5013 & 8013
  5. ^ James 1985, pp. 584–589.
  6. ^ James, D. Clayton (1985). Volume 3, Triumph and Disaster 1945–1964. Boston: Houghton Mifflin. pp. 607–608. ISBN 0-395-36004-8. OCLC 36211311. {{cite book}}: |work= ignored (help)
  7. ^ "DoD Directive 1344.10, February 19, 2008 -- POSTED 2/21/2008" (PDF). Archived from the original (PDF) on July 13, 2007. Retrieved 2010-10-15.
  8. ^ ssenberg, Sasha (28 September 2007). "Army personnel spoke at McCain rally". Boston Globe. Retrieved 15 April 2010.
  9. ^ Kumar, Anita (27 January 2010). "McDonnell's guests at tonight's State of the Union response". Washington Post. Retrieved 10 April 2010.
  10. ^ "Bob McDonnell's Republican Response to the SOTU: A Military Misstep". 28 January 2010. Retrieved 10 April 2010.
  11. ^ "Organizational Chart". U.S. Department of Defense. Retrieved 11 September 2014.
  12. ^ http://www.health.mil/aboutMHS.aspx[permanent dead link]
  13. ^ tricare.mil

Further reading[edit]