The 21st Battalion was an infantry battalion of the Australian Army. It was raised in 1915 as part of the First Australian Imperial Force for service during World War I and formed part of the 6th Brig
Troops from the 21st Battalion prepare to abandon the Southland after it was torpedoed by a German submarine, September 1915
Members of the 21st Battalion receiving inoculations prior to deployment to Gallipoli
The 21st Battalion attacks Mont St Quentin, 1 September 1918
The First Australian Imperial Force was the main expeditionary force of the Australian Army during the First World War. It was formed as the Australian Imperial Force on 15 August 1914 following Brita
Unidentified members of the 5th Division, enjoying a smoko near Mametz, on the Somme in France, December 1916. Some are wearing slouch hats, steel helmets and woollen garments, demonstrating both the variety of official battledress, and how it was modified, for local conditions.
Australian Prime Minister Billy Hughes (at left) with Lieutenant-General William Birdwood in early 1916
Soldiers from the 11th Battalion posing on the Great Pyramid of Giza, 1915.
Australian light horsemen