Air Vice Marshal William Dowling Bostock, was a senior commander in the Royal Australian Air Force (RAAF). During World War II he led RAAF Command, the Air Force's main operational formation, with responsibility for the defence of Australia and air offensives against Japanese targets in the South West Pacific Area. His achievements in the role earned him the Distinguished Service Order and the American Medal of Freedom. General Douglas MacArthur described him as "one of the world's most successful airmen".

RAAF Command was the main operational arm of the Royal Australian Air Force (RAAF) during World War II. The command was formed in September 1942 and by April 1943 comprised 27 squadrons, including units from the Netherlands, the United Kingdom and the United States, as well as Australia. Coming under the operational authority of Allied Air Forces Headquarters in the South West Pacific Area, RAAF Command exercised control of its units through geographically based area commands in Australia and, later, New Guinea, as well as large mobile formations including the Australian First Tactical Air Force. The command reached a strength of 41 squadrons in October 1944. From the time of its establishment, until its disbandment in September 1945, it was led by Air Vice Marshal Bill Bostock.