"A Lewis Gun- Anti-aircraft Pit" image: a British soldier stands next to a mounted Lewis gun in an anti-aircraft pit dug into the ground, looking up at a biplane in the sky with a pair of binoculars. Immediately to the right of him is the entrance to a dug-out with a corrugated iron roof. On the ground further back are lines of bell tents, showing that the position is to help defend a military camp.