One hundred years ago, on April 6, 2017, the United States Congress declared war on Germany. From 1917 to 1918, some 24 million men residing in the U.S. completed draft registration cards. If you have family who lived in the U.S. during WWI, search *Ancestry Library Edition’s “U.S., World War I Draft Registration Cards, 1917-1918” for relatives. The registration cards are a great source of information. *In-library use only.