The baitlayer prepares his bait.
In another amusing example of Australian slang, the cooks of a battalion were referred to as "baitlayers". This derogatory term was a cheeky reference to the food being poisonous much like a bait for a wild animal.
In this picture the baitlayer is NX34516 Sapper Thomas M. O'Connor of the 2/4th Field Park Company, Royal Australian Engineers who has a reputation amongst the 9th Division as supposedly having 1001 recipies for bully beef. In this case he makes bully pancakes, which the men report as 99% pancake and 1% bully beef.
image 013357 Australian War Memorial.