The 2/15th Battalion returned to Australia in mid-March 1944 aboard the "Klipfontein". After docking in Brisbane, a 42-day leave period followed before the battalion came together again at Ravenshoe to begin the process of rebuilding in preparation for the next phase of the war. Between June and August, training progressed from individual instruction up to brigade-level exercises as the unit was re-constituted for its next campaign. During training it experienced a high turnover of personnel and a large influx of reinforcements, including several officers, was received in the middle of 1944 from the disbanded 62nd Battalion, a Queensland-based Militia battalion that had previously been assigned to Merauke Force. A long period of training followed the battalion's return to Australia in early 1944, as there was a degree of uncertainty about the Australian Army's role in future operations in the Pacific after the US military assumed primary responsibility for combat operations in the theatre. Nevertheless, in the final months of the war the 2/15th took part in efforts to recapture North Borneo as part of Operation Oboe Six. After a battalion-level exercise in early 1945, the 2/15th sailed from Australia aboard the "Charles Lummis" in early May.