As the war progressed, the threat to Merauke reduced as the Allies advanced north through New Guinea. As a result, the brigade was withdrawn from Merauke in August 1944, and after a period of leave concentrated at Strathpine, Queensland, where they undertook further training. In December 1944, the brigade deployed to Bougainville, where Australian troops had taken over from US forces, which were subsequently redeployed to the Philippines. The 11th Brigade relieved the US 148th Infantry Regiment, and subsequently took part operations in the northern and central parts of the island. Following its deployment in Bougainville, the brigade was assigned to the II Army Corps. During this time, the brigade's three infantry battalions alternated between holding actions in the central sector, and the advance in the north. Several notable actions were fought at Tsimba Ridge and Porton Plantation before the 11th Brigade was relieved by the 23rd Brigade in June 1945. The brigade was moved back to Torokina after this, remaining there until the end of the war. In September 1945, the brigade was assigned to the 11th Division and moved to Rabaul to carry out garrison duties.