5 August 1914

The Aeronautical Division of the US Army Signal Corps, a quasi-headquarters (Lt. Col. Samuel Reber, Washington, D.C.) issued orders in the name of the Chief Signal Officer. On August 5, 1914, by Signal Corps Aviation School General Order No. 10, the Aviation Section was organized into the Signal Corps Aviation School (Capt. Arthur S. Cowan, San Diego), and the 1st Aero Squadron (Capt. Benjamin D. Foulois).