The history of CFB Edmonton Garrison begins at an old airfield called Blatchford Field. The airfield began operating after the First World War and became important to the opening up and development of the Canadian north. During the Second World War, Blatchford Field became a Royal Canadian Air Force (RCAF) training station under the British Commonwealth Air Training Plan. The RCAF also ran No. 4 Initial Training School which was a ground school located at the University of Alberta. Many Royal Canadian Air Force squadrons and units were once located here.
During the war, the airfield became a staging point for the U.S. defense of Alaska and was heavily used by the U.S. military. In 1968, when Canada's armed forces were amalgamated, RCAF Station Namao has redesignated Canadian Forces Base Edmonton. Although both runways are still visible they are no longer in use except for a section now used by helicopters. In 2010–2011, the Government of Canada announced the construction of new facilities for visiting Canadian Armed Forces members training at CFB Garrison.