This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
blackandwhite monochrome photo border outdoor sky serene black and white World War New Zealand troops during training behind the line in Belgium rehearsing the attack on Messines. Shows soldiers in field down on one knee with packs on their backs and guns held upright on the ground. Photograph taken circa by Henry Armytage Sanders.