No. 82 Wing's Liberators played both a tactical and a strategic role in the Borneo Campaign, beginning with the lead-up to Operation Oboe One, the invasion of Tarakan on 1 May 1945. During that month a detachment relocated from Fenton to Morotai, attacking targets in Celebes and Balikpapan prior to Operation Oboe Six, the invasion of Labuan. In June, while the final Allied offensive of the Borneo Campaign got under way as Operation Oboe Two, the Battle of Balikpapan, the remainder of No. 82 Wing transferred from NWA to the command of the Australian First Tactical Air Force in Morotai. In the middle of the month the wing dropped 120 tons of bombs on Balikpapan's oil fields and surrounding areas, as well as coastal defence sites. During July it bombed targets at Celebes and Borneo, losing five Liberators for the month, including that of its new commanding officer, Group Captain Donald McLean. McLean died with most of his crew after being hit by anti-aircraft fire and ditching into the sea, a notoriously risky operation in the Liberator owing to the fuselage's tendency to break in two upon striking the water.