"An Advanced Post, Day" image: Three British soldiers shelter under a corrugated iron roof in an advanced post. Another soldier sits in the immediate foreground on sentry duty, looking towards one of the stacked rifles on the left, which has a small mirror mounted on the bayonet to enable him to view over the parapet. Beyond the shelter, the bomb-damaged hills of No Man's Land are visible, with lines of stakes designed to hold barbed wire stuck in the ground. All four soldiers have a small blue square of cloth on their left shoulders, identifying them as men of the 63rd Royal Naval Division.