One of the most important Canadian contributions to the war was the British Commonwealth Air Training Plan (1939). Canada and England constructed bases to train airmen from every part of the Commonwealth. These training centres were built across Canada and helped to train 131,533 pilots, observers, flight engineers and other air crew. The initial station was established at the Charlottetown Airport by the RAF (Royal Air Force), with two RCAF (Royal Canadian Air Force) stations later being built in Summerside and Mount Pleasant. As a result, much to the delight of the young women of the City, Charlottetown was flooded with airmen from all over the Commonwealth. Many of these men would marry Islanders and return here after the war was over.