No. 81 Wing was slated to take part in Operation Oboe One, the invasion of Tarakan, in May 1945 but was unable to move in time from Noemfoor to its new base on Morotai in the Dutch East Indies; only No. 76 Squadron played any part in the battle, undertaking patrols and convoy escort. The following month, No. 81 Wing flew close support missions for the Australian 9th Division in Operation Oboe Six, the invasion of Labuan. Along with its three Kittyhawk squadrons, the wing's order of battle included No. 457 Squadron flying Spitfires, No. 25 Air Stores Park, No. 24 Medical Clearing Station, No. 22 Repair and Servicing Unit, No. 9 Repair and Servicing Unit Detachment, No. 111 Mobile Fighter Control Unit, and seven Radar Stations—a total of over 2,000 personnel. Its commander on Morotai and Labuan was Group Captain Ian McLachlan. No. 81 Wing was to have provided two squadrons in support of Operation Oboe Two, the assault on Balikpapan, in June but Tarakan airfield, from which it was to operate, was not ready in time. The wing was still based on Labuan when the Pacific War ended in August 1945. Calls soon came to serve with the formation as part of the proposed Commonwealth occupation forces in Japan, and many personnel volunteered to do so.