Defense Department
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| Defense Department | |
|---|---|
 | |
| Agency name | Defense Department |
| Native name | Department of Defense |
| Formation | 1947 |
| Preceding1 | War Department |
| Jurisdiction | Federal government |
| Headquarters | The Pentagon |
| Chief1 name | Secretary of Defense |
| Chief1 position | Secretary |
| Website | Official website |
Defense Department The Defense Department is the executive branch agency charged with national defense, composed of uniformed services, civilian components, and support institutions coordinating strategic policy, force employment, and resource management. It evolved through major events such as the World War II, the Cold War, the Korean War, and the Vietnam War, and interfaces with international organizations like the North Atlantic Treaty Organization and treaties such as the Treaty on the Non-Proliferation of Nuclear Weapons.
History
The origin traces to reforms after World War II and the National Security Act of 1947, consolidating the former War Department and Department of the Navy alongside the newly created United States Air Force. Key milestones include integration debates influenced by figures like James Forrestal and institutional responses to crises exemplified by the Cuban Missile Crisis and the Gulf War. Doctrinal shifts followed publications such as the Weinberger Doctrine and events like the September 11 attacks, prompting operations including Operation Enduring Freedom and Operation Iraqi Freedom. Technological evolution paralleled programs like the Manhattan Project earlier and later initiatives such as the Defense Advanced Research Projects Agency and projects involving stealth technology and the Global Positioning System.
Organization and Leadership
Leadership centers on the Secretary of Defense supported by the Deputy Secretary of Defense, the Joint Chiefs of Staff, and combatant commanders such as those of United States Central Command and United States European Command. Principal departments include the Department of the Army, Department of the Navy, and Department of the Air Force, each led by civilian secretaries like the Secretary of the Navy. Specialized agencies include the National Security Agency, Defense Intelligence Agency, and National Geospatial-Intelligence Agency, while laboratories and research centers such as Los Alamos National Laboratory and Sandia National Laboratories contribute scientific expertise. The institutional framework incorporates advice from entities such as the Defense Science Board and coordination with bodies like the Office of the Director of National Intelligence.
Roles and Responsibilities
Primary roles encompass force readiness and power projection through commands such as United States Northern Command and United States Indo-Pacific Command, crisis response exemplified by deployments to Haiti and peacekeeping linked to United Nations missions. Responsibilities extend to nuclear deterrence under policies informed by the Strategic Arms Reduction Treaty era and to arms control dialogues with parties like Russia and China. The department administers personnel systems influenced by statutes such as the Uniform Code of Military Justice and manages veteran transition points connected to agencies like the Department of Veterans Affairs.
Budget and Procurement
Fiscal authority operates within appropriations from the United States Congress under processes shaped by acts like the Budget Control Act of 2011. Major procurement programs include aircraft such as the F-35 Lightning II, naval vessels like Arleigh Burke-class destroyer, and space initiatives coordinated with National Aeronautics and Space Administration and commercial partners. Acquisition offices follow regulations codified in the Federal Acquisition Regulation and oversight by committees such as the Senate Armed Services Committee and the House Armed Services Committee. Industrial base partners include firms tied to the Defense Industrial Base and major contractors formerly associated with cases like Lockheed Martin and Boeing.
Military Components and Civilian Agencies
Uniformed services encompass the United States Army, United States Navy, United States Marine Corps, United States Air Force, and the United States Space Force, alongside reserve components such as the United States Army Reserve and the United States Navy Reserve. Civilian agencies include the Defense Logistics Agency, Defense Health Agency, and the Defense Finance and Accounting Service, while intelligence elements coordinate with the Central Intelligence Agency and Federal Bureau of Investigation on counterintelligence and counterterrorism. Education and training institutions span the National Defense University, service academies like the United States Military Academy, and war colleges including the Naval War College.
Policy and Strategic Doctrine
Strategic formulation draws on documents such as the National Security Strategy, the National Defense Strategy, and historical doctrine like the AirLand Battle. Policy debates involve concepts such as forward presence demonstrated in regions like Europe and the Indo-Pacific, force posture adjustments after operations in Iraq and Afghanistan, and technology policy addressing cyber threats linked to incidents such as the SolarWinds cyberattack. Alliances and partnerships are informed by agreements like the Mutual Defense Treaty with Japan and cooperative frameworks such as the Quadrilateral Security Dialogue.
Oversight, Accountability, and Legal Framework
Oversight mechanisms include congressional hearings before the Senate Armed Services Committee and investigations by the Government Accountability Office and Department of Justice probes into procurement irregularities. Legal frameworks incorporate the Uniform Code of Military Justice, the War Powers Resolution, and international law instruments such as the Geneva Conventions. Ethics and inspector functions operate through offices like the Office of Inspector General and standards set by statutes including the Foreign Corrupt Practices Act when interacting with contractors. Transparency initiatives intersect with whistleblower cases and media coverage from outlets like The New York Times and The Washington Post.