With the U.S. entrance into the war, Wilson and Secretary of War Newton D. Baker launched an expansion of the army, with the goal of creating a 300,000-member Regular Army, a 440,000-member National Guard, and a 500,000-member conscripted force known as the "National Army." Despite some resistance to conscription and to the commitment of American soldiers abroad, large majorities of both houses of Congress voted to impose conscription with the Selective Service Act of 1917. Seeking to avoid the draft riots of the Civil War, the bill established local draft boards that were charged with determining who should be drafted. By the end of the war, nearly 3 million men had been drafted. The navy also saw tremendous expansion, and Allied shipping losses dropped substantially due to U.S. contributions and a new emphasis on the convoy system.