http://forums.mvgroup.org/index.php?showtopic=66906

Hell Below

They traveled alone and in packs. They collected intelligence and launched attacks. They rose above the ocean depths and ultimately changed the course of war. Chart some of the most dramatic and influential submarine patrols of World War II, from the perspective of the naval masterminds who plotted the strategies to the tenacious and aggressive commanders who carried them out. Follow the ongoing challenges the Axis and Allies faced as they pushed the limits of their vessels in pursuit or in escape.

Part 2 Hitlers Revenge

Just one month after the Japanese attack on Pearl Harbor, another enemy brought World War II to American shores, not through the air but beneath the sea. This is the story of Operation Drumbeat, German Admiral Karl Donitz's campaign to send U-boats to the doorstep of the U.S. and attack Allied merchant shipping from Newfoundland to North Carolina. Through archival war footage and military expert testimony, we reveal how the Nazis managed to hammer our coast again and again and why the U.S. Navy was unable to stop them.

Smithssonian Channel Site

Full Version Available Upon Request