This is another in a recent run of reprints of well-known works on the Great War, published by Pen & Sword. As a study of the battle it pales in comparison with at least two more recent works ("Most unfavourable ground" by Niall Cherry and "Loos 1915" by Nicholas Lloyd), and is not up to the high standard of academic rigour we have now come to expect from such works.
Warner's treatment relies heavily on personal accounts and letters by men who were there, and these are undoubtedly the strongest and most interesting aspect of the book. These include extracts from the diary of the Commander-in-Chief, Sir John French. Unusually, the personal accounts are not organised by timeline but into chapters, one for each British Division that was in action. This tends to make it difficult to follow the battle as it unfolds, and Warner's opening description of the conception and execution of the battle is at too high a level for the uninformed reader to position the individual that is speaking. Read in conjunction with, or possibly after, one of the two books named above, the accounts make much more sense and do add to our understanding. There is also a clear one-page sketch map.
I would not recommend rushing out to buy "The Battle of Loos" and certainly not for anyone wishing to study the battle for the first time, but the personal content is certainly of interest and worth buying for that alone.
"The Battle of Loos" was first published in 1976.