During the First World War, animals played a crucial but often overlooked role on the battlefield, serving alongside millions of soldiers and enduring immense hardship. An estimated 16 million animals—ranging from dogs and horses to pigeons, cats, camels, and even a baboon—were deployed across various fronts, contributing significantly to the war effort.
One notable example is Prince, a dog who reportedly traveled unaccompanied from London through France to reunite with his owner, Private James Brown, on the front line. Prince became a regimental mascot, beloved by soldiers who resisted official orders to reduce the number of dogs at the front in order to keep him. Dogs like Prince provided vital morale boosts to troops far from home, maintaining a connection to civilian life amid grueling conditions.
Horses were indispensable to the war effort, with over eight million dying during the conflict. At the height of the war, more than a thousand horses per day were shipped across the Atlantic to support operations on the Western Front. Warrior, ridden by Major-General Jack Seely throughout the war, survived numerous battles and bombardments, later celebrated as "The Horse the Germans Could Not Kill." Such animals were critical for cavalry charges, transport, and communication despite facing extreme danger.
Other animals gained distinction through their service and survival stories. Stubby, a stray dog from Connecticut, became the most decorated dog of the war after surviving multiple battles, gassing, and injuries. He was even promoted from corporal to sergeant in the U.S. Army. Percy, a black cat, survived alongside his owner in one of the first tanks deployed at the Battle of the Somme in 1916. Meanwhile, Jackie, a Chacma baboon adopted by a South African regiment, stood guard duties, went over the top in battle, and was wounded by shrapnel. He was cared for and even given a pension after the war.
Carrier pigeons also played a vital role in battlefield communications, especially when telephone lines were cut. One celebrated bird, Cher Ami, flew 25 miles under heavy fire despite severe injuries to deliver a message that ultimately saved surrounded U.S. soldiers during the Argonne Forest offensive in late 1918. For her bravery, Cher Ami received France’s Croix de Guerre.
Animals’ contributions extended beyond combat roles. English nurse Edith Cavell, who helped Allied soldiers escape occupied Belgium, was accompanied by her Belgian shepherd dog, Jack. Before her execution by German forces in 1915, Cavell reportedly expressed concern for Jack’s fate, underscoring the emotional importance of animal companions during wartime.
Despite their vital service, recognition for these animals was long delayed; the Animals in War Memorial in London’s Hyde Park was not established until 2004, nearly ninety years after the war ended. Histories of individuals such as Private James Brown, Major-General Seely with Warrior, or Corporal Stubby provide a glimpse into how these creatures helped sustain morale and contributed tangibly to military operations.
The sacrifices made by animals in World War One were considerable, and their role varied from essential logistical support to symbolic reminders of home for weary soldiers. Their presence on the battlefield, often alongside human comrades in the most harrowing conditions, highlights a lesser-known dimension of warfare, where loyalty and survival extended beyond human lines.