The Canadian Aviation Corps (CAC) was an early attempt to create an air force for Canada at the beginning of the First World War. The unit was created in 1914 and was attached to the Canadian Expeditionary Force. The CAC had a maximum strength of three personnel and one aircraft which was delivered but never used. By May 1915, the unit had ceased to exist.
The idea of a Canadian Aviation Corps was conceived by Colonel Sam Hughes, Canada's Minister of Militia and Defence. Hughes had asked British authorities how Canada could help the war effort in the field of military aviation. Britain suggested that Canada could help by supplying military aviators. Hughes appointed Ernest Lloyd Janney as provisional commander and authorized him to spend up to $5000 on an aircraft. A Burgess-Dunne floatplane was purchased in the United States, shipped to Vermont and then flown to Valcartier, Quebec where it was taken apart, crated, and shipped to England. Janney and the two other CAC members, Lieutenant W. F. Sharpe, a pilot, and Staff Sergeant H. A. Farr, a mechanic, accompanied the aircraft. The aircraft was left abandoned and damaged on Salisbury Plain, having never flown any combat operations. By May 1915, the CAC had dissolved.
A second attempt in creating an air force began with the creation of the Canadian Air Force in 1918.
Personnel were army officers transferred to an air unit with minimal flight training.
This unit was allied with the following: