 This would be the battalion's last contribution to the war, as it was training out of the line when the Armistice was declared in November 1918.It was disbanded on 20 April 1919 while at Montigny-le-Tilluel, Belgium, when most of its personnel, including the commanding officer, Lieutenant Colonel Frederick Forbes, were marched out for repatriation to Australia as part of the demobilisation process.During the war, the 20th Battalion lost 848 men killed and 3,143 men wounded.