The use of horses and horse transport by the Chinese Labour Corps is not something widely considered but this image shows two types of such transport in use in 1919. On the left is an Army Service Corps Water Cart and on the right a General Service Wagon. In both cases the driver of the vehicle is from the Army Service Corps but they both have CLC in the cab with them.
One can only speculate on the circumstances of this photograph but it was taken in 1919 and in the rear background is a road sign which points to the village of Roisel. Roisel is on the Somme and was the scene of fighting in August 1918. At the time this image was taken the CLC were being employed in this area to bury the dead and clear the area of unexploded ordnance. It is therefore likely that these War Horses and their masters were being employed in such work and were part of a team roving the Somme battlefields at this time.