PowerPoint Show by Andrew

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These vivid images portray Australian and New Zealand soldiers wielding guns and bogged down in muddy trenches, to candid snaps of diggers enjoying their down time around a fire all across Europe during some of WWI's fiercest battles.

The sprawling Australian encampment near Cairo, Egypt, in the early months of 1915.

Two Australian officers sitting on camels in Cairo

Aussie troops are pictured telling stories to each other during an evening away from the front line.

Australian troops wear protective gas masks as they stand on the muddy ground on the front line of battle.

Australian troops in the Turkish Lone Pine trenches, captured on the afternoon of the 6 August 1915.

Boats filled with Australian soldiers are tied together as they make their way from land back to their ship.

Australian troops line up with the national flag for a portrait in front of a decimated building 1917.

A trio of soldiers check bombs before they attach them to the underbelly of a war airplane 1918.

Australian soldiers dress the head wound of a fellow soldier 1917.

Soldiers take a moment of down time during battle in their hollowed out trenches.

Four Australian soldiers walking along the duckboard track during the Third Battle of Ypres in September and October 1917.

Members of the 2nd Australian Infantry Battalion outside their billets in the Cavalry Barracks 1917.

Soldiers stand in line on a cobblestone street with their weapons balanced on their left shoulder.

The diggers all turn to the camera for a moment of relief in the trenches.

A mortar emplacement manned by soldiers in the West Yorkshire Regiment on February 6, 1918.

Gunners in the Royal Field Artillery moving an 18 pound gun into firing position next to a ruined home during the Battle of Lys in May 1918.

Australian sailors stand watch as a group hoists the national flag.

West Indian and Australian troops stacking eight-inch shells at a dump in Ypres in October 1917.

German medical officer Lt Schnelling (pictured left) was detailed to work with the wounded German soldiers treated by New Zealand ambulances on the front lines.

A major and lieutenant in the Australian Flying Corps in a Bristol fighter aircraft.

Four Australian gunners posing with their artillery piece.

Australian cavalry soldier seated on his horse - 1917.