7. The Blitz, the Bismarck and Barbarossa (April - June 1941)

With Britain failing to fall at Hitler's feet, the Blitz drew to a close, as the Führer turned his attention eastwards. The sinking of the German battleship, the Bismarck, lifted the spirits of the British Navy, and as Hitler's campaign for Russia, code-named Operation Barbarossa, got underway, the course of World War II veered dramatically.