Hall of Fame Major League Baseball Player, Social Reformer, famed baseball player and civil rights advocate, Jack "Jackie" Robinson became the first African-American to play in modern major league baseball. Jack "Jackie" Robinson Was Assigned to a Segregated Army Cavalry Unit at Fort Riley In 1942, Jack Robinson was drafted and assigned to a segregated Army cavalry unit in Fort Riley, Kansas. Having the requisite qualifications, Robinson and several other black soldiers applied for...