Established in March 1945 under the command of Group Captain J.M. Whyte, No. 86 (Attack) Wing comprised two flying units, No. 1 Squadron operating de Havilland Mosquitos and No. 93 Squadron operating Bristol Beaufighters. The wing was initially based on the island of Morotai in the South West Pacific theatre, as part of the Australian First Tactical Air Force. Its order of battle for Operation Oboe Six, the assault on north-west Borneo commencing in June, included Nos. 1 and 93 Squadrons, No. 84 Operational Base Unit, No. 30 Air Stores Park, No. 29 Medical Clearing Station, and No. 1 Repair and Servicing Unit—a total of over 1,400 personnel. Delays getting the aircraft operational at their forward base on Labuan meant that the wing only completed three combat missions before the end of the Pacific War, conducting rocket and machine-gun attacks on targets in Sarawak during August 1945. No. 1 Squadron took part in one operation and No. 93 Squadron in two; each unit lost one aircraft in action.