No. 412 (Transport) Squadron was formed in 1949, but traces its history back to two separate squadrons: Number 12 Communications Flight at RCAF Station Ottawa and No. 412 Squadron RCAF|412 (Fighter) Squadron, which was formed at RAF Digby, England on June 30, 1941.
John Gillespie Magee, the author of the famous aviation poem, High Flight, was serving with 412 Squadron when he was killed in a mid-air collision in his Spitfire in 1941.
The squadron was moved to France in June 1944, days after the Allied landings and operated on continental Europe for the remainder of the war. The squadron was based at Wunstorf, Germany when the war ended in May 1945.
After the Second World War, Number 12 Communications Flight was reassigned as 412 Squadron on April 1, 1947, and renamed 412 (Composite) Squadron based at Rockcliffe. In 1955, the 412 moved to Uplands. In the late 1970s a sub-unit was established at CFB Lahr in West Germany. This operation closed in 1993.