In 1943–1944, after re-organisation and training to prepare for jungle warfare, the 2/43rd fought in New Guinea, as part of operations to capture Lae and secure the Huon Peninsula. After returning to Australia in early 1944, a long period of training followed on the Atherton Tablelands in Queensland, before the battalion undertook its final campaign of the war, taking part in Allied operations to re-take Borneo from the Japanese in June 1945. Following the end of the war, the battalion was disbanded in February 1946. One member of the battalion, Private Tom Starcevich, was awarded the Victoria Cross.