"Study for a Trench Mortar Firing at Evening. (no 3910)" image: a squared up sketch of four British soldiers manning a trench mortar position in a wood. The four men form a human chain from right to the left, the man on the right taking mortars from a stack under the parapet and passing them along, with the man on the far left firing and positioning the weapon itself. The position is littered with barbed wire, mortars and corrugated iron, with the tree stumps of the wood in the background.