The first school at the airfield was No. 14 Service Flying Training School (SFTS). RCAF staff began arriving at the station before construction was finished. First to arrive was a 17-man security party under Sgt. Les Oliver in late March. Squadron Leader T. Moreton, the first officer, arrived on 2 June 1941 to manage the new station's equipment. Wing Commander Norman Irwin arrived at Aylmer on 18 June 1941 on "Temporary Duty" and was appointed C.O. when the station was activated on 3 July 1941.