Staying alive in the trenches. While helping the "other guy" fail in that activity. This was the source of much ingenuity, such as these Aussies in an outpost in the trenches at Gallipoli. The Digger on the right is using a periscope to spot for the Digger standing on the left who is using a trench mount to remotely aim and fire his rifle. The other two are killing time, thinking of home and wishing they were elsewhere - but they're ready... three bayonets-mounted rifles lean against...