Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands.
A battalion is a military unit.
The Battle of Pozières (23 July – 3 September 1916) took place in France around the village of Pozières, during the Battle of the Somme.
Entrenching battalions were temporary units formed in the British Army during the First World War.
The First Australian Imperial Force (1st AIF) was the main expeditionary force of the Australian Army during World War I. It was formed on 15 August 1914, following Britain's declaration of war on Germany, initially with a strength of one infantry division and one light horse brigade.
The I ANZAC Corps (First Anzac Corps) was a combined Australian and New Zealand army corps that served during World War I. It was formed in Egypt in February 1916 as part of the reorganisation and expansion of the Australian Imperial Force and the New Zealand Expeditionary Force (NZEF) following the evacuation of Gallipoli in December 1915.
Infantry is the branch of an army that engages in military combat on foot, distinguished from cavalry, artillery, and tank forces.
Tunnel warfare is a general name for war being conducted in tunnels and other underground cavities.
The Western Front was the main theatre of war during the First World War.
World War I (often abbreviated as WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.