'The Flanders mud hampers our artillery moving a held gun from flooded and shell-pitted position', 1915 (c)

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

Horse-drawn Mk I 18-pounder field guns of the British Expeditionary Force (BEF) negotiate a flooded shell-hole en route to the front. With a crew of ten men, it could fire 18-pound shrapnel, high explosive or smoke shells up to six kilometres (over 6,500 yards).

From a collection of 101 stereoscopic photographs entitled 'The Great War'.