 Conceptualised as a "mopping up" operation, the 5th Division's campaign was limited to containing the large Japanese force – up to 100,000 men – in the Gazelle Peninsula.Prior to departure, the 64th Battery replaced its Short 25-pounders with standard guns and by January 1945 it had landed at Jacquinot Bay.Over the course of the next eight months the regiment was heavily involved in supporting the 6th Infantry Brigade's operations around Waitavolo and Tol, and then the 13th Infantry Brigade's advance towards Moondei, as part of the effort to clear the area around Wide Bay and Open Bay.