On a sweltering day in August 1906 U-1, or Unterseeboot 1, meaning underwater boat, was lifted into Kiel's waters for trials; 100 hundred years later Kiel still

The submarine emerged as a serious weapons system during the First World War (1914 - 1918). During that conflict Germany with its unrestricted submarine warfare

Just hours after World War II was declared, Germany struck its first blow, firing without warning on the passenger liner Athenia. The British ship was loaded wi