'Dogs with first-aid and stimulants off to find wounded in inaccessible parts of No Man's Land', 1915 (c)

Stereoscopic photograph, World War One, Western Front (1914-1918), 1915 (c).

Armies used dogs in various capacities during the war. They were trained to carry messages and medical supplies, act as sentries and scouts, and were used in mine detection and seeking out casualties in no-man's-land. The threat of snipers made it hard for people to carry medical supplies or messages over long distances. Dogs presented a smaller target and were able to travel faster than humans.