Article Summary: Defense Primer: The Department of Defense as of 31Jul26
Article Summary: Defense Primer: The Department of Defense Understanding the U.S. Department of Defense The U.S. Department of Defense (DOD) was established by the National Security Act of 1947 to improve coordination among America's military forces following World War II. Congress intended the department to provide unified strategic direction, greater efficiency, and centralized civilian oversight of the armed forces. Today, the DOD is one of the world's largest organizations, employing more than 2.8 million military personnel and civilians at thousands of locations worldwide. [congress.gov] The DOD carries out its mission through five major institutional components: the Office of the Secretary of Defense (OSD), the Joint Chiefs of Staff (JCS), the Military Departments, the Unified Combatant Commands (COCOMs), and the Defense Agencies. The Secretary of Defense exercises authority over the department and is supported by OSD in policy, planning, resource management, and civi...
