Probably 1st Battalion, the Dorsetshire Regiment, in the Nieuport area, Western Front, June-October 1917.
The battalion Transport section cleans and maintains the wagons (note the 'four eights' divisional sign of 32nd Division). The wagons move out through a village. In the blacksmith's yard the horses are shod. Signallers of the battalion practise semaphore. A sergeant demonstrates a signal lamp linked to a morse transmitter. The battalion drills on a beach.