This is a short piece of work by Arthur Conan-Doyle. It is based upon his experiences visiting the different army positions during the First World war. I've been unable to confirm this, but it appears to be something that was written specifically for publication within a newspaper or magazine of the time.
There is an element of jingoism in his writing; the allied troops are all described in glowing terms, as fit, able, cheerful and willing. In contrast, the few times that he discusses the enemy, he uses fairly derogatory terms. However, when you consider that this was half way through the "war to end wars", it's perhaps understandable that he was trying to present the best possible image for the people on the home front. There are more than a few exortations for those back home, to make sure that they keep up the work to ensure that the supply lines don't fail.
Read a little deeper into the work, and its a fascinating glimpse into the life of the soldiers of the period when viewed by an outsider. Even amongst the slightly sanitised descriptions, there are stark reminders that this was a brutal killing field and that bullets are no respecters of status.
As it is so short (and free!), it is well worth downloading. It can help add some substance to other works on the same period and provide another aspect of a period of history that is beginning to pass beyond living living memory.