Air Chief Marshal Percy Ronald Gardner Bernard, 5th Earl of Bandon, was an Anglo-Irish aristocrat who served as a senior commander in the Royal Air Force in the mid-20th century. He was a squadron, station and group commander during the Second World War, and the fifth Commandant of the Royal Observer Corps after the war. He was awarded the American Distinguished Flying Cross and Bronze Star Medal in 1946.

The Royal Observer Corps (ROC) was a civil defence organisation intended for the visual detection, identification, tracking and reporting of aircraft over Great Britain. It operated in the United Kingdom between 29 October 1925 and 31 December 1995, when the Corps' civilian volunteers were stood down. Composed mainly of civilian spare-time volunteers, ROC personnel wore a Royal Air Force (RAF) style uniform and latterly came under the administrative control of RAF Strike Command and the operational control of the Home Office. Civilian volunteers were trained and administered by a small cadre of professional full-time officers under the command of the Commandant Royal Observer Corps; latterly a serving RAF Air Commodore.