Jack Dempsey, American boxer and lieutenant (born 1895)

William Harrison "Jack" Dempsey, nicknamed Kid Blackie and The Manassa Mauler, was an American boxer who competed from 1914 to 1927, and world heavyweight champion from 1919 to 1926. One of the most iconic athletes of his era, Dempsey is ranked sixth on The Ring magazine's list of all-time heavyweights and fourth among its Top 100 Greatest Punchers, while in 1950 the Associated Press voted him as the greatest fighter of the past 50 years. He is a member of the International Boxing Hall of Fame, and was in the previous Boxing Hall of Fame.