Inspired by a tweet from Tim Kurkjian, here's to these greats who selflessly answered the call:
Bob Feller - Navy anti-aircraft battery leader who served in the Pacific theater on the USS Alabama. Enlisted 2 days after Pearl Harbor, as baseball's highest paid player.
Ted Williams - fighter pilot instructor during WWII, fighter pilot (and John Glenn's wingman) during Korean War. While he was not happy to be called up a 2nd time to serve in Korea, he served with distinction and by all accounts was an outstanding pilot, logging 39 combat missions.
Yogi Berra - machine gunner aboard a landing craft during D-Day
Hank Greenberg - longest wartime service of any MLB'er. Pacific theater, scouting bombing targets for B-29s
Warren Spahn - baseball's winningest leftie, took part in The Battle of The Bulge. Say no more.
I left out those who served but performed ceremonial roles stateside - like playing on exhibition baseball teams - such as Stan Musial, Jackie Robinson, Willie Mays and Joe DiMaggio. DiMaggio in particular - to the surprise of no one - deserves no accolades, as he was extremely bitter about having to serve and openly bitched about all the money he was losing due to the war.