Verdun, the Somme, Tannenberg and Passchendaele. These epics of destruction and futility are such bywords for the First World War that - Jutland apart - we forget the role played by sea power in the war to end war. The great global conflict is too often narrowed to the fields of Flanders and the plains of Picardy. Now, award-winning biographer and naval historian Jim Ring has revisited the story to redress the balance. He emphasises how Great Britain, 'the great Amphibian' in Churchill's words, was able to move its army anywhere in the world. The Navy's very existence deterred any attempt at invasion, and its great ships kept the German High Sea fleet at bay; lastly, the Navy gradually starved the Kaiser's nation of war materiel and food.