or U-boats, sunk, scuttled, captured, or otherwise lost to German forces during World War II. Here, naval historian Timothy Mulligan describes 25 of the most historically significant U-boats.

The British Pathé clip of a news reel from the time, captured the attack by a German U-boat on 25 November 1941. At the time it was believed 859 crewmen died when the ship sank - it was later ...