When the German battleship Bismarck put to sea on 19 May 1941 on her one and only offensive mission, ‘Operation Rheinubung’, she carried a boosted complement of sailors to provide prize crews for the many Allied merchant ships she was expected to capture. The naval action that followed, the most momentous of the war against Nazi Germany, is remembered for the relentless determination of the Royal Navy to pursue and sink Bismarck at whatever cost ...