The 18th Battalion was an infantry battalion of the Australian Army. During World War I, the battalion was raised in 1915 as part of the Australian Imperial Force, attached to the 5th Brigade, of the
Members of the 18th Battalion in France, c. 1916–1918
A Stokes mortar from the 18th Battalion in action near Ploegsteert, January 1918
The 51st Battalion, Far North Queensland Regiment is an Australian Army Reserve Regional Force Surveillance Unit headquartered at Porton Barracks in Cairns, Queensland. The battalion's primary role is
Lieutenant Clifford Sadlier, who received the Victoria Cross for his actions around Villers-Bretonneux in April 1918
The Villers-Bretonneux Cross, originally erected at the spot near to where a large number of members of the battalion lost their lives, now on display at the Soldier's Chapel, St George's Cathedral, Perth
Members of the 31st/51st Battalion around Porton Plantation, June 1945