This book examines how the Royal Navy protected British shores and wider interests through World War I and the one that was to follow, including the northern patrol lifelines of the Atlantic, Arctic, and Mediterranean convoys and increasingly sophisticated amphibious operations that would mark it out in WWII. The book ends with chapters on The Falklands War and Royal Navy's anti-piracy role and involvement in humanitarian crises. This visually stunning volume is complemented by 15 loose facsimile documents that include letters and diary entries, war reports and other items of memorabilia that bring an immediacy to the events being described.