Lusitania, a British transatlantic liner sunk by a German submarine off Kinsale Head, Ireland, on May 7, 1915. Of 1,198 persons who lost their lives, 128 were Americans. There were 761 survivors. The incident aroused intense indignation in the United States and brought the country closer to intervention in World War I. Germany rejected a demand for reparations, stating—correctly—that the ship carried ammunition and that passengers had been warned by advertisements that they sailed at their own risk. Evidence made public after the war indicated that the Lusitania's captain, William T. Turner, had failed to follow standing orders regarding evasive action.
World War I was the great armed conflict of 191418. Until World War II, it was often called the Great War because it was the most destructive and widespread war the world had ever seen.
Gallipoli Campaign, an Allied attempt in 1915, during World War I, to seize the Gallipoli Peninsula in Turkey and thus gain control of the Dardanelles strait, opening a supply route from the west to Russia through the Black Sea.