On Christmas Eve 1944, a German U-boat torpedo killed 763 U.S. troops off France. Nearly 500 bodies were never recovered.

The German U-boat U-853 sank the last U.S. merchant ship sunk in WWII. Historian Tim Gray speculates that German U-boats may have entered Narragansett Bay before the U.S. officially entered WWII.

The post-war narrative of the German U-boat efforts follows several stages: the first “Happy Time,” followed by the second “Happy Time,” and then utter destruction by the Allies. In reality, the ...

Add Yahoo as a preferred source to see more of our stories on Google. After the Japanese aircraft carrier raid on Pearl Harbor on Dec. 7, 1941, followed by Germany’s and Italy’s declarations of war on ...

Accidents involving toilets typically only involve personal embarrassment, and rarely are they the cause behind the sinking of a specialized hunter-killer submarine. That's precisely what happened, ...

The development of the automotive torpedo during World War I helped submarines to become more efficient by allowing them to attack from a safe distance. During World War I, Germany’s U-boats engaged ...

This undated photo, provided by the National WW II Museum in New Orleans, shows Oberleutnant zur See Hans-Gunther Kuhlmann, center, saluting commander of the German U-boat U-166 on his boat. The U-166 ...

One of the deadliest military machines of World War II was the infamous German U-boat. While most people know a little about U-boats and are more than aware that they're submarines, one thing that's ...

Under the command of Lt. Cmdr. Maurice Jester, the Coast Guard cutter Icarus, shown here, sank a German U-boat off the North Carolina coast during WWII. (U.S. Coast Guard) After the Japanese aircraft ...