This is an example of one of the few images taken at night during World War I. According to the existing caption it is taken near the Australian lines. The foreground is brightly lit up, with grass and scrub clearly visible. In the background, against a black sky, shell flares criss-cross the sky.
[Original reads: 'OFFICIAL PHOTGRAPHS TAKEN DURING THE BRITISH ADVANCE IN THE WEST - A night scene within the Australian lines.']