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Originally established in 1947 when it gained independence from the U.S. Army, it traces its history back through the United States Army Air Forces, United States Army Air Corps, United States Army Air Service, the Division of Military Aeronautics, Aviation Section, U.S. Signal Corps, to the birth of Aeronautical Division, U.S. Signal Corps on ...
Along with conducting independent air operations, the United States Air Force provides air support for land and naval forces and aids in the recovery of troops in the field. As of 2020 [update] , the service operates approximately 5,500 military aircraft [ 6 ] and approximately 400 ICBMs . [ 16 ]
The United States Department of Defense (DoD, [2] USDOD, or DOD) is an executive branch department of the federal government of the United States charged with coordinating and supervising the five U.S. armed services, the Army; Navy; Marines; Air Force; Space Force; the Coast Guard for some purposes, and related functions and agencies.
Its main responsibilities are to control the Armed Forces of the United States. It is headed by the Secretary of Defense . The department was established in 1947 and is divided into three major Departments—the Department of the Army , Navy and Air Force , as well as a number of other component organizations.
On 20 December 2019, the United States Space Force became an independent military service and Air Force Space Command was transferred and redesignated as Space Operations Command. Since its inception in 1947, a total of 27 organizations have been designated as major commands.
The chain of command leads from the president (as commander-in-chief) through the secretary of defense down to the newest recruits. [2] [3] The United States Armed Forces are organized through the United States Department of Defense, which oversees a complex structure of joint command and control functions with many units reporting to various commanding officers.
The USAF's test and evaluation center for air-delivered weapons, navigation and guidance systems, command and control systems, and Air Force Special Operations Command systems (96th Test Wing) as well as electronic warfare, armament and avionics, chemical defense, reconnaissance, and aircrew training devices (53rd Wing).
The number of personnel in paramilitary forces: armed units that are not considered part of a nation's formal military forces. The total number of active, reserve, and paramilitary personnel. The ratio per thousand inhabitants of total military (active, reserve, and paramilitary). The ratio per thousand inhabitants of active military only.