This volume deals with events in Home Waters from the spring of 1915 to the Battle of Jutland, 31st May/1st June 1916 which is covered in considerable detail with an analysis of the results comparing ships of the opposing fleets and losses in personnel and ships. It is also concerned with the Dardanelles campaign up to the final evacuation and the launching of the Salonika expedition. It deals with the campaign in Mesopotamia as far as the Battle of Ctesiphon 22-24 November 1915. It also describes the finding and destruction of the Koenigsberg. The author died a few hours after completing the final chapter and the proofing and checking of the narrative was carried out by Lt Col E. Y. Daniel, RM, secretary of the Historical Section of the Committee of Imperial Defence. The task of completing the history was taken over by Henry Newbolt.