"Umbrella Hill - the most advanced of the redoubts guarding Gaza" image: British infantrymen advance at night across No Man's Land towards Turkish positions on Umbrella Hill, which rises up gently in the right background. The British soldiers, carrying rifles, move out of their advanced trenches in the left of the composition, with the dry ground in front of them dotted with shell holes and clusters of barbed wire. The dark sky is illuminated by a halo of light over the distant hill, caused by British artillery fire on Turkish positions.