Having read the original version of this book I decided to update myself with the revised version. Fortunately, Passingham has not simply rehashed the old, but added depth to his initial publication. This is the most readable version of the battle, easier to follow than Turner's book on the same subject and more in depth. However, the depth of research (especially photographs) does not detract from the understanding of how the battle progressed. Passingham has also approached the subject matter with a focus on the meticulous build up - tunneling,supplies, use of terrain models, training, that ensured General Plumer (probably the best British General on the Western Front) was achieved the first notable success in this theatre of war, where attacking casualties were far lower than those of the defending Germans. Messines Ridge is a battle often overlooked in favour of the battle to follow shortly afterwards - Passchendaele. This book will enable the reader to understand how and why this battle was successfully fought - a blue print for ultimate victory and described as "A black day for the German Army"