Hitler's Revenge 水下地狱 1 5 1207068 8.0 1 0 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. 45 https://image.tmdb.org/t/p/w1280/cIskCci4QWwFp3QaHGHCnRXobtJ.jpg 2016-05-03 2016-05-03 false 0 National Geographic Smithsonian Channel Parallax Film Productions Maija Leivo Ian Herring Paul Snider German Officer https://www.themoviedb.org/person/1652757 1652757 Patrick Truelove Admiral Ernie King https://www.themoviedb.org/person/1652758 1652758 Matthias Brunert Naval Officer https://www.themoviedb.org/person/1652755 1652755 2025-09-23 16:07:32 UNKNOWN NONE S01E05.strm