Operating with its new squadrons and aircraft, No.  77 Wing took part in the Battle of Noemfoor, commencing in June 1944. Wing headquarters relocated to Noemfoor Island in July, followed by Nos. 22 and 30 Squadrons the next month. This was No. 77 Wing's composition on 25 October 1944, when No. 10 OG's name was changed to the Australian First Tactical Air Force, ostensibly to emphasise "the formation's impressive size and ambitious purpose". That month, the wing's aircraft were credited with sinking 24 enemy transport ships and barges in support of the Allied landings during the Battle of Leyte. In November, the wing advanced to the island of Morotai, where it attacked Japanese airfields, shipping, and infrastructure on Celebes. By the end of the year, Wing Commander Charles Read had taken over command of No. 77 Wing, and the formation's complement had been augmented by No. 31 Squadron, a Beaufighter unit previously based in Darwin, Northern Territory, as part of North-Western Area Command. No. 22 Squadron was withdrawn to Noemfoor in December to re-equip with Beaufighters; upon its return No. 77 Wing became an all-Beaufighter formation, operating three squadrons of the type.