On August 18, 1945, when the war ended, Lt. Williams was in Pearl Harbor, Hawaii awaiting orders as a replacement pilot. While in Pearl Harbor, Williams played baseball in the Navy League. Also in that eight-team league were Joe DiMaggio, Joe Gordon, and Stan Musial. The Service World Series with the Army versus the Navy attracted crowds of 40,000 for each game. The players said it was even better than the actual World Series being played between the Detroit Tigers and Chicago Cubs that year.