They knew that at any moment, German U-boats could descend upon them ... up along the coast of north Wales almost a month after the sinking. They used a technique called numerical modeling ...

World War I was raging off the British Isles when the German submarine UC-18 surfaced to attack easy prey on the chilly morning of9, 1917. Its target, the Lady Olive, was about eight miles off the ...

The sinking of the passenger liner Lusitania by a German U-boat helped to shatter that hope. Woodrow Wilson, 1918. Courtesy: Library of Congress Wilson demanded an apology from Germany and ...

U-boat from which codebooks and valuable cryptographic materials were recovered before sinking, facilitating, in late 1942, the second major Allied breakthrough in reading German U-boat ...

The U249, which was the first German U-boat to arrive in UK waters, came into Weymouth Bay and surrendered. The commanding officer went on-board with his crew and took command. The first things ...