While the Type XXI subs sank no ships, their potential terrified Allied navies, prompting intensified anti-submarine efforts.

D scan reveals hidden details of a WWII Nazi submarine wreck in the Baltic Sea, offering rare insights into its structure.

This imposing concrete structure in the German city of Bremen is 1400 feet long, 300 feet wide and 90 feet high, and looks every inch the secret Nazi facility that it is. Its purpose was to build and ...

CC0 Usage Conditions ApplyClick for more information. While U-boats were able to evade Allied warships, the odds were much lower with air patrols. Aircraft could force a submarine underwater ...

A 1944 Enigma cipher machine has auctioned for £305,200 in London. The M4 machine was in wonderful condition. Read more here.