Military rank List view Sgt Ernest George Bruhn Military rank Airforce Date AC1 Aircraftman Class I RAAF Royal Australian Air Force 06.07.1942 LAC Leading Aircraftman RAAF Royal Australian Air Force 01.04.1943 Cpl Corporal RAAF Royal Australian Air Force 01.12.1943 Sgt Sergeant RAAF Royal Australian Air Force 01.04.1945