Trench direction diagram mounted on a piece of wood and fixed to the wall of a front line trench at Cambrin held by the Sherwood Foresters 16th September 1917. Imperial War Museum © IWM (Q 7254).

Barbed wire gate to let down to force a block against raiders. Front line trench at Cambrin held by 1/7th Sherwood Foresters, 16 September 1917. Imperial War Museum © IWM (Q 6020).