An RAAF Command forward headquarters, known as Advanced RAAF Command or ADRAAFCOM, was established on 15 March 1945 at Morotai to directly control No. 1 TAF during the upcoming Oboe operations, the reoccupation of Borneo. Responsibility for all Allied air operations south of the Philippines, as well as Royal New Zealand Air Force (RNZAF) units based in the Solomon Islands to support the Bougainville Campaign, was assigned to RAAF Command. Bostock expressed to Kenney his desire that "1st Tactical Air Force should continue to be employed as a forward offensive formation rather than in a garrison role". However, by April morale among No. 1 TAF fighter pilots, dissatisfied with the ground attack and 'mopping up' roles assigned to them, had deteriorated to such an extent that eight senior officers attempted to resign their commissions in an incident known as the "Morotai Mutiny". Kenney, Jones and Bostock all became involved in trying to defuse the situation, and the commander of No. 1 TAF, Air Commodore Harry Cobby, was sacked and replaced by Air Commodore Frederick Scherger as preparations for Operation Oboe One, the invasion of Tarakan, were under way. RAAF Command had control of the USAAF Fifth and Thirteenth Air Forces, as well as No. 1 TAF, during the Tarakan operation, which commenced on 1 May 1945. By this time RAAF Command comprised some 17,000 personnel. For Operation Oboe Six, the invasion of Labuan–Brunei in June, RAAF Command also had at its disposal aircraft based in Australia at Western and North-Western Area Commands. For Operation Oboe Two, the invasion of Balikpapan in July, Bostock marshalled forty Allied squadrons. His aim, in concert with that of Kenney and I Corps commander Lieutenant General Leslie Morshead, was to deliver the heaviest aerial bombardment possible against enemy targets, to enable Australian assault forces to land with minimal casualties. MacArthur called the Labuan air offensive "flawless".