Germany changed the tactic during WWI via unrestricted submarine warfare, which meant that German U-boats could attack without warning any vessel it came across. Germany sank the civilian vessel ...

They were designed to engage in a deadly game of cat and mouse, luring in surfaced U-boats as British crews pretended to escape in “panic parties” before a German submarine commander blew up ...

and by the end of WWI, had built some 334 U-boats (with another 226 under construction). They were vastly superior to U.S. subs. Not only could a typical WWI U-boat could go faster (six knots at ...

Before I kick off this week's effort I'd just like to say thanks to those who got in touch re last week's TRM.

During WWII, Germany built 1,162 destructive "U-boats," which is short for the German word "Unterseeboot," or undersea boat. By April 1917, 430 Allied and civilian vessels were sunk by German U-boats.

The weapon would be the submarine, U-boats. On a desolate mud bank in the salt marshes of Kent lies the metal carcass of a First World War German U-boat. British ships were blockading German ports ...