Two months after the Yankees beat the Brooklyn Dodgers in the 1941 World Series—the first of seven October meetings between the two crosstown rivals before the Dodgers moved to Los Angeles—the United States naval fleet was attacked at Pearl Harbor by the Empire of Japan, and many of their best players, including DiMaggio, entered the military during World War II. The Yankees still managed to pull out a win against the St. Louis Cardinals in the 1943 World Series.