To this day, there has only been one recorded instance of submarine-on-submarine warfare during WWII. The German Navy's destroyed U-864 is toxic to this day.

When the German submarine U-505 was captured by US forces in 1944, the mission was top secret. Now, eight decades later, the vessel — the only intact German submarine that was captured by US forces ...

Hitler’s U-boats were a feared component of his naval strategy during the Second World War. But what was life aboard these ...

The U-505 submarine served 12 patrols and sank eight enemy boats before the US Navy captured it in 1944. The U-boat is now on display at Chicago's Griffin Museum of Science and Industry. Visitors can ...

Add Yahoo as a preferred source to see more of our stories on Google. The U-505 submarine served 12 patrols and sank eight enemy boats before the US Navy captured it. The U-boat is now on display at ...