Founded in defiance of the Treaty of Versailles, the Kriegsmarine was established in 1935 and reached a peak strength of more than 800,000 personnel in 1944. Its original aim of amassing a surface fleet on parity with Great Britain's Royal Navy shifted with the outbreak of World War II, after which focus moved to submarine warfare, with the Kriegsmarine's U-boats exacting a heavy toll on Allied shipping across the globe. Meanwhile, several of its formidable capital ships – notably the , Bismarck, , and – saw widespread action as Nazi Germany strove to defeat the Allies at sea. In this new study, Nigel Thomas examines the evolving organization, uniforms and equipment used by the Kriegsmarine during its ten-year existence, spanning its pre-war beginnings, the invasion of Norway in 1940, and through to the deployment of Kriegsmarine personnel as grounds troops from 1943–45. The different gear worn by its various branches of service is described in detail and illustrated with newly commissioned colour artwork and an array of specially selected photographs.