United States in World War I 11 approximately 10,000 fresh soldiers were arriving in France daily. In 1917, Congress gave US citizenship to Puerto Ricans when they were drafted to participate in World War I, as part of the Jones Act. In the end, Germany miscalculated the United States' influence on the outcome of the conflict, believing it would be many more months before US troops would arrive and overestimating the effectiveness of U-boats in slowing the American buildup. The United States Navy sent a battleship group to Scapa Flow to join with the British Grand Fleet, destroyers to Queenstown, Ireland and submarines to help guard
Romanian Black Sea Fleet during World War I machine guns. The minelayer "Alexandru cel Bun" was armed with two 37 mm guns and two machine guns, in addition to her load of mines. The main Romanian port of Constanța was leased to a Russian naval squadron, headed by the battleship "Rostislav". This, combined with the fall of the port to the Central Powers during the Second Battle of Cobadin, rendered the small Northern port of Sulina as the base for the Romanian Black Sea Fleet. On 13 November 1916, the German minelaying submarine "UC-15" set off to lay mines off Sulina. However, she only managed to lay two