British troops asleep in a support trench during the preliminary bombardment, previous to the attack on Beaumont Hamel, 1st July 1916. Note scaling ladders (duckboards) across trench. 

World War One era photograph of two Canadians, inscribed "Two Homebirds". Fate unknown.

Soldiers unload stretchers carrying the wounded from a truck to a reception tent at a Canadian casualty clearing station. Wounded soldiers would have first undergone surgical procedures at a main dressing station before transferring to a clearing station. From there, they would be transported by rail to a general hospital in France, or, for the seriously injured long-term care, to England.

A German shell explodes over recently captured ground near Langemarck during the Battle of Ypres, 22 August 1917.

A view upwards from a trench. A British infantryman stands within the trench in the foreground, looking up at an RAMC squad passing over the trench, silhouetted against the night sky. Two of the RAMC men carry a folded-up stretcher.

New Zealand troops of the 9th (Wellington East Coast Rifles) Regiment using a periscope rifle and a trench periscope in a front line trench near Fleurbaix, June 1916. 

Cpt. James Thomas Byford McCudden VC, DSO & Bar, MC & Bar, MM (28 March 1895 – 9 July 1918) was a British First World War flying ace. With his six British medals and one French, McCudden received more awards for gallantry than any other airman of British nationality serving in the First World War. He was also one of the longest serving. On 9 July 1918, McCudden was killed in a flying accident when his aircraft crashed following an engine fault.  He was 23.

Rifles and kit of wounded - Field Ambulance. June, 1916. This image shows inventory racks of equipment, including Ross Mk III rifles in the foreground.