Air Marshal Sir Peter Roy Maxwell Drummond, was an Australian-born senior commander in the Royal Air Force (RAF). He rose from private soldier in World War I to air marshal in World War II. Drummond enlisted in the Australian Imperial Force in 1914 and the following year saw service as a medical orderly during the Gallipoli campaign. He joined the Royal Flying Corps in 1916 and became a fighter ace in the Middle Eastern theatre, where he was awarded the Military Cross and the Distinguished Service Order and Bar. Transferring to the RAF on its formation in 1918, he remained in the British armed forces for the rest of his life.

Commando was a very long range Consolidated Liberator II aircraft adapted for passenger transport, to serve as the personal aircraft of Prime Minister Winston Churchill. Commando disappeared without a trace on 27 March 1945 over the North Atlantic Ocean, while on a flight from RAF Northolt to Lajes Field in the Azores, en route to Ottawa in Canada. The cause of the disappearance of the aircraft remains unknown to this day.