In May 1915, during the height of the Great War, RMS Lusitania, queen of the Cunard Line, was carrying 2200 passengers and crew into the War Zone of the British Isles. They had been warned that any ships flying the Union Jack were liable to be torpedoed by German U-boats. In broad daylight in sight of the Irish coast, she was struck by a torpedo from the U-20 and sank in twenty minutes.

The loss of life was second only to Titanic, but the repercussions and blame went much farther and ultimately led to the United States’ entry into the Great War.