'There was a blinding flash and an ear-splitting report and the "prisoner" fell across me. The bullet had caught him full in the chin and passed out at the base of his skull.' In A Tommy at Ypres we see the First World War through the eyes of Walter Williamson. His remarkable diary provides a fascinating first-hand record of major military events ranging from the Third Battle of Ypres to the Somme Retreat - but it is also a moving story of one man's...