Shoulder the Sky (World War I Series, Novel 2) - Anne Perry

In April 1915 Joseph Reavley is serving as chaplain on the Front Line at Ypres. The war that should have been 'over by Christmas' has already decimated the British Expeditionary Force. To Joseph's sector comes an ambitious young war correspondent determined to expose the horrors of trench life. But before he can dispatch his piece, he is found dead in no-man's-land. Still seeking the man behind his parents' murder, and to protect his sister Judith from the pain of an impossible romance, Joseph must find the truth. His search takes him to London and the beaches of Gallipoli, and at last to face a desperate moral judgement which challenges every belief he holds.