1 September 1914 (USA) — The first United States tactical air unit, the First Aero Squadron, is organized because of the August outbreak of war in Europe. Based in San Diego, California, the unit has 16 officers, 77 enlisted men, and 8 airplanes.

1 September 1921 (USA) — President Warren Harding authorizes the creation of the Navy Bureau of Aeronautics, with Rear Admiral Moffett as its chief.

One September 1928 (Canada/USA) — Montréal, Canada, and New York are linked by airmail and passenger service when Colonial Air Transport starts scheduled operations.

1 September 1923 (Australia) — The Royal Australian Air Force is formed.

1 September 1934 (USA) — Colonel Roscoe Turner flies from Burbank, California, to Floyd Bennett Field, Brooklyn, New York, in 10 hours 2 minutes 57 seconds, setting a new transcontinental record. (Wendell-Williams, Pratt & Whitney “Hornet” engine.)

1 September 1953 (Belgium/France ) — The first scheduled international helicopter service begins between Belgium and France. The service is operated by Belgian airline Sabena.

1 September 1953 (USA) — The first aerial refueling of a jet aircraft by a jet tanker is made with a Boeing B-47 “Stratojet” by a Boeing KB-47B “Stratojet” tanker.

1 September 1982 (USA) — Air Force Space Command established.