Battery Action! the Story of the 43rd Battery was one of many post-world War One books published by returning soldiers. The 43rd Battery approached Jimmie Frise (who himself was also in the artillery) to illustrate their book which was published in 1919. The authors were Hugh R. Kay, George Magee, and F.A. Maclennan. These are the illustrations provided by Jim. They were also reprinted in The First Great War as seen by Jimmy Frise (1972). The original book was also reprinted by CEF Books in 2002.
Note that in the First World War, there was extensive use of mules to transport artillery shells to the guns. Click on each image for the full view.