They knew that at any moment, German U-boats could descend upon them. Disaster struck at 4:15 p.m. The German UB-64 launched a torpedo that hit the vessel's starboard side and caused an explosion.

As a Royal Navy volunteer in World War One, he had become all too aware of the threat from Germany’s U-boats. Wilkinson decided he could use his artistic skills to protect Allied ships.

When German U-boat Commander Walther Schwieger ordered a torpedo strike on the Lusitania, he didn't know it would be the shot that eventually led the U.S. into WWI. But it wasn't a mistake ...

The now-iconic geometric designs were intended to throw off the visual perception of German U-boats crews and prevent them from accurately targeting ships with torpedoes. Conventional wisdom ...

The weapon would be the submarine, U-boats. On a desolate mud bank in the ... Jeremy Paxman explains Lord Kitchener's iconic recruitment PR campaign of WW1. Crushing defeat in the first battle ...