Aircrew in the RAF in the Second World War were automatically given the rank of Sergeant upon qualification in their particular aircrew category. This means that there were sergeant pilots, navigators, bomb aimers,wireless operators, air gunners and flight engineers over most of the various RAF Commands. Once in the air, a sergeant pilot was in command of the aircraft even if there were commisioned officers in the crew. As in everything else, there were a few exceptions to this, as when a crew member who was not the pilot was designated as "Captain of Aircraft.