The Indian Empire at War. From Jihad to Victory. The Untold Story of the Indian Army in the First World War

This book is (in the publisher's words) a "brilliantly original" retelling of the war, finding the Indian Army's true place at the heart of global events. This is a very comprehensive study of the Indian Army in all theatres of the war, and all branches of the service, including Intelligence. This is a book into which the author has clearly put a great deal of personal love: the subject is obviously dear to him.