Department of Defense DoD
Last Updated: December 22, 2025 2:17:30 PM PST
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Introduction to Department of Defense DoD
Department Of Defense (DoD)
- The Department of Defense is America's oldest and largest government agency. With our military tracing its roots back to pre-Revolutionary times, the Department of Defense has grown and evolved with our nation.
- DoD is allocated the largest level of budgetary resources and charged with coordinating and supervising all agencies and functions of the government relating directly to national security and the U.S. armed forces. The organization and functions of the DoD are set forth in Title 10 of the United States Code.
Major Components of DoD
- US Army
- US Navy
- Air Force
DoD Agencies
- Defense Intelligence Agency (DIA)
- Defense Advanced Research Project Agency (DARPA)
- Defense Threat Reduction Agency (DTRA)
- National Geospatial-Intelligence Agency (NGA)
- National Security Agency (NSA)
Agencies that provide grants & contracts to UCSD
- U.S. Air Force
- Air Force Office of Scientific Research
- Air Force Research Lab
- Air Force Academy
- U.S. Army
- Army Research Laboratory (ARL)
- Army Medical Research Acquisition Activity
- U.S. Navy
- Office of Naval Research (ONR)
- Space & Naval Warfare Systems Center (SPAWAR)
- Naval Health Research Center
- Naval Post Graduate School
- Navy Engineering Logistics Office
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