Military rank List view WO Jens Ipsen Military rank Airforce Date Leading Aircraftman Royal Air Force 1941 Sergeant Royal Air Force Nov 41 Warrant Officer Royal Air Force Aug 43 Flyverløjtnant af 1ste Grad (Flying Officer) Den danske Marine 1 Aug 46 Kaptajnløjtnant (Lieutenant) Det danske Flyvevåben 1 Mar 52