This contact began with the first meeting between Soviet and American forces at Torgau, near the Elbe river on Elbe Day, April 25, 1945. The line continued to form as American, British and Soviet forces took control of, or defeated, Nazi forces, up until the time of the May 8 unconditional surrender of Germany and beyond. This line of contact did not conform to the agreed-upon occupation zones, as stipulated in the Yalta Conference.