Marshal of the Royal Air Force Sir John Grandy, GCB, GCVO, KBE, DSO (8 February 1913 – 2 January 2004) was a senior officer in the Royal Air Force. He was the only officer who fought and commanded a squadron during the Battle of Britain to reach the post of Chief of the Air Staff. In the latter role he implemented the final stages of the RAF's withdrawal from the Persian Gulf and the Far East, oversaw the ordering and subsequent cancellation of the F-111 strike aircraft and handed over Britain's nuclear deterrent role to the Royal Navy.