Some six weeks after the United States formally entered the First World War, the U.S Congress passes the Selective Service Act on May 18, 1917, giving the U.S. president the power to draft soldiers.
When he went before Congress on April 2, 1917, to deliver his war message, President Woodrow Wilson had pledged all of his nation’s considerable material resources to help the Allies—France, Britain, Russia and Italy—defeat the Central Powers. What the Allies desperately needed, however, were fresh troops to relieve their exhausted men on the battlefields of the Western Front, and these the U.S. was not immediately able to provide. Despite Wilson’s effort to improve military preparedness over the course of 1916, at the time of Congress’s war declaration the U.S. had only a small army of volunteers—some 100,000 men—that was in no way trained or equipped for the kind of fighting that was going on in Europe.
