British officers and men enjoy a cup of tea in their trench, 1918

Photograph by Bayley Harrison, World War One, Western Front (1914-1918), 1918.

A mug of hot tea was no doubt welcome during the cold and wet winter months on the Western Front. The presence of an empty rum jar nearby suggests that these soldiers added something stronger to their tea. Army regulations ordered that the rum ration was to be drunk in the presence of an officer or non-commissioned officer so it could not be hoarded.

From a collection of 23 official photographs by press photographer Bayley Harrison.