On 15 May 1918, Sergeant David Emmett Coyne was nominated for the Victoria Cross for throwing himself on a hand-grenade that he had thrown after it had accidentally bounced back off a parapet, in order to protect other soldiers. However, as this was not in the face of the enemy, the posthumous nomination was changed to that of the Albert Medal in Gold, the only such medal issued to a member of the AIF (it was later superseded by the George Cross). Later, in August 1918, the 31st Battalion was involved in the last Allied offensive of the war when it took part in the fighting that resulted in the capture of Villers Bretonneux and then Bullecourt. Later, in September, the battalion was involved in the attack on the St Quentin Canal. This proved to be their last involvement in the war as they were out of the line when the Armistice occurred on 11 November. The 31st Battalion, AIF, was disbanded in March 1919 while in France awaiting repatriation to Australia.