Williams joined the Navy Reserve on May 22, 1942, went on active duty in 1943, and was commissioned a second lieutenant in the United States Marine Corps as a Naval Aviator on May 2, 1944. Williams also played on the baseball team in Chapel Hill, North Carolina, along with his Red Sox teammate Johnny Pesky in pre-flight training, after eight weeks in Amherst, Massachusetts, and the Civilian Pilot Training Course. While on the baseball team, Williams was sent back to Fenway Park on July 12, 1943, to play on an All-Star team managed by Babe Ruth. The newspapers reported that Babe Ruth said when finally meeting Williams, "Hiya, kid. You remind me a lot of myself. I love to hit. You're one of the most natural ballplayers I've ever seen. And if my record is broken, I hope you're the one to do it". Williams later said he was "flabbergasted" by the incident, as "after all, it was Babe Ruth". In the game, Williams hit a 425-foot home run to help give the American League All-Stars a 9–8 win.