List of U.S. Department of Defense agencies

This is a list of Agencies under the United States Department of Defense (DoD) which was formerly and shortly known as the National Military Establishment. Its main responsibilities are to control the Armed Forces of the United States. The Department was established in 1947 and is currently divided into three major Departments - the Department of the Army, Navy and Air Force- and has a military staff of 1,418,542. (553,044 US Army; 329, 304 US Navy; 202, 786 US Marine Corps; 333,408 US Air Force). The DoD is headed by the Secretary of Defense. The current defense secretary is Chuck Hagel.

DoD Agencies, Field Activities, and others

 * Defense Advanced Research Projects Agency (DARPA)
 * Defense Commissary Agency (DeCA)
 * Defense Contract Audit Agency (DCAA)
 * Defense Contract Management Agency (DCMA)
 * Defense Finance and Accounting Service (DFAS)
 * Defense Information Systems Agency (DISA)
 * Defense Intelligence Agency (DIA)
 * Defense Legal Services Agency
 * Defense Logistics Agency (DLA)
 * Defense Media Activity (DMA)
 * Defense Security Cooperation Agency (DSCA)
 * Defense Security Service (DSS)
 * Defense Threat Reduction Agency (DTRA)
 * Missile Defense Agency (MDA)
 * National Geospatial-Intelligence Agency (NGA)
 * National Security Agency (NSA)
 * Pentagon Force Protection Agency


 * Defense Technical Information Center
 * Economic Adjustment Office
 * Education
 * Human Resources
 * Prisoner of War/Missing Personnel Office
 * TRICARE Management
 * Washington Headquarters Services


 * National Guard Bureau (NGB)
 * National Reconnaissance Office (NRO)
 * Special Inspector General for Afghanistan Reconstruction (SIGAR)
 * Special Inspector General for Iraq Reconstruction (SIGIR)

Unified Commands
The United States has 9 Combatant Commands.
 * U.S. Africa Command (USAFRICOM)
 * U.S. Central Command (USCENTCOM)
 * U.S. European Command (USEUCOM)
 * U.S. Northern Command (USNORTHCOM)
 * U.S. Pacific Command (USPACOM)
 * U.S. Special Operations Command (USSOCOM)
 * U.S. Southern Command (USSOUTHCOM)
 * U.S. Strategic Command (USSTRATCOM)
 * U.S. Transportation Command (USTRANSCOM)

Army

 * U.S. Army Corps of Engineers
 * Regional Headquarters
 * Great Lakes Region
 * Missouri River Regional Headquarters (CENWD-MR) (Former Missouri River Division)
 * North Pacific Regional Headquarters (CENWD-NP)(Former North Pacific Division)
 * Army Digitization Office (ADO)
 * Army Medical Department (AMEDD)
 * Army Research Laboratory (ARL)
 * Army Review Boards Agency (ARBA)
 * U.S. Army Financial Management
 * U.S. Military Academy
 * White Sands Missile Range (WSMR)

Divisions

 * Great Lakes and Ohio River Division (CELRD)
 * Mississippi Valley Division (CEMVD)
 * North Atlantic Division (CENAD)
 * Northwestern Division (CENWD)
 * Pacific Ocean Division (CEPOD)
 * South Atlantic Division (CESAD)
 * South Pacific Division (CESPD)
 * Southwestern Division (CESWD)

Laboratories

 * Cold Regions Research and Engineering Laboratory (CECRL)
 * Construction Engineering Research Laboratory (CECER)
 * Waterways Experiment Station (CEWES)
 * Topographic Engineering Center (CETEC)

Navy

 * Office of Naval Research (ONR)
 * Information Network Project Office (INPO)
 * Office of Naval Intelligence (ONI)
 * United States Naval Academy

Marine Corps

 * Marine Expeditionary Units
 * Commandant of the Marine Corps
 * Assistant Commandant of the Marine Corps
 * Sergeant Major of the Marine Corps
 * Headquarters, United States Marine Corps

Air Force

 * Air Force Research Laboratory
 * Air Force Reserve Officer Training Corps (AFROTC)
 * Air National Guard
 * U.S. Air Force Office of Special Investigations (OSI)

Major Commands (MAJCOMs)
 * Air Combat Command (ACC)
 * Pacific Air Forces (PACAF)
 * United States Air Forces in Europe (USAFE)
 * Air Force Special Operations Command (AFSOC)
 * Air Education and Training Command (AETC)
 * Air Mobility Command (AMC)
 * Air Force Global Strike Command (AFGSC)
 * Air Force Materiel Command (AFMC)
 * Air Force Reserve Command (AFRC)
 * Air Force Space Command (AFSPC)