As part of the buildup of forces, aviation units were formed into aero squadrons primarily at Kelly Field, San Antonio, Texas, with additional units being formed at Rockwell Field, San Diego California. Once formed, and prior to their deployment to Europe, Camp Taliaferro, north of Fort Worth, Texas, and several airfields near Toronto, Ontario, Canada were used by the British Royal Flying Corps (RFC) to perform flight training for the new aero squadrons. Camp Hancock, near Augusta, Georgia, was used for training service squadrons of aircraft mechanics as well as flight training.