The aircrews of RAF Bomber Command during World War II operated a fleet of bomber aircraft carried strategic bombing operations from September 1939 to May 1945, on behalf of the Allied powers. The crews were men from the United Kingdom, other Commonwealth countries, and occupied Europe, especially Poland, France, Czechoslovakia and Norway, as well as other foreign volunteers. While the majority of Bomber Command personnel were members of the RAF, many belonged to other air forces – especially the Royal Canadian Air Force (RCAF), Royal Australian Air Force (RAAF) and Royal New Zealand Air Force (RNZAF). Under Article XV of the 1939 Air Training Agreement, squadrons belonging officially to the RCAF, RAAF, and RNZAF were formed, equipped and financed by the RAF, for service in Europe. While i