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| | Systems of Designation |
 | | The USAAS became the U.S. Army Air Corps (USAAC) under the Air Corps Act of July 2, 1926; the General Headquarters of the Air Force (G.H.Q. AF) was formed on March 1, 1935 to alleviate some of the responsibilities of the USAAC. |
 | | The U.S. Air Force Department was created on September 18, 1947, resulting in a new system of designation for its aircraft and the U.S. Army's aircraft, which developed its own system in 1956. |
 | | On June 20, 1941, Army Regulation 95-5 created the U.S. Army Air Forces (USAAF), with the USAAC and the G.H.Q. AF as its principal parts, although the G.H.Q. was discontinued on March 9, 1942. |
| www.driko.org /usdes2.html (1076 words) |
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