1.38: #6 Ulysses S. Grant

Serving during the height of Reconstruction, Ulysses Grant fought admirably to bring the nation back together in an effort to fulfill his campaign slogan: let us have peace. 
But ultimately, Grants efforts would be largely forgotten amidst an array of political scandals committed by the men and associates around him, marring an otherwise successful president that helped bridge the gap between the Civil War and the Gilded Age.