Watch Hitler's Secret Attack on America

December, 1941. Shortly after Japan attacks Pearl Harbor, German leader Adolf Hitler declares war on the United States. With an entire ocean between the two countries, the American people still feel safe from direct attack. The Germans, however, are about to convince them otherwise. iral Karl Donitz has devised a plan to take the war to America's doorstep. It was one of the deadliest attacks by a foreign enemy along America's shores, and it was covered up.

Until now.