Taken by official war photographer Frank Hurley, this image and its title are equally captivating because it's such an ordinary photo of a young man looking after his animals in such extraordinary circumstances. I can just imagine him saying something like 'Must be almost time to feed the donks' - an unremarkable job if he was at home, perhaps he was a farmer. Something else again at War in the Middle East. See pic.
Many soldiers wrote to their loved ones during the First World War. We're capturing your responses a century later.