Men of a Field Ambulance unit. About 80 men are lined up, with the officers and the unit's mascot dog in the foreground. The unit cyclist stands to the left and their eight horses are lined up at the back. Bicycles were often used as one of the most efficient ways of transporting messages to and from different units. [Original reads: 'OFFICIAL PHOTOGRAPH TAKEN ON THE BRITISH WESTERN FRONT IN FRANCE. Staff of a Field Ambulance in France.'].