A lesser-known event during World War II, the sinking of the Blücher is key part of naval history that marked the beginning of the Norwegian Campaign. The Sinking of the Blücher is a comprehensive investigation into why the German cruiser, named for Gebhard Leberecht von Blücher (Prussian victor of the Battle of Waterloo), was approaching Oslo on the night of 9th April 1940, why and how she was sunk, and the ramifications and significance of the event.