29. Jackie Robinson
Jackie Robinson broke down all sorts of barriers. He was the first African-American to play in the Major Leagues way back in 1947, starting at first base for the Brooklyn Dodgers. This basically ended racial segregation in professional baseball that went all the way back to the 1880s. As well as multiple All-Stars, Robinson was the first black player to win the MVP award back in 1949.
Before all this though, he was drafted to serve in a segregated Army cavalry unit. However, he was court-martialled for refusing to get up from his seat on a non-segregated bus and face false accusations of drunkenness and other charges. Robinson didn’t drink. He received an honorable discharge in 1944 and never entered combat.