The “S” in Grant’s name didn’t stand for anything.

Grant’s given name was actually Hiram Ulysses Grant, and the middle initial is a vestige of Congressman Thomas Hamer’s error when he accidentally wrote the future general’s name as ‘Ulysses S. Grant.’

U. S. Grant detested wearing army uniforms.

During his study at West Point, Grant received numerous demerits for his unkempt uniforms. His distaste for military attire continued even after he assumed command of the Union Army during the Civil War.

Mark Twain published U.S. Grant’s memoirs.

Grant began compiling his memoirs in the mid-1880s, Twain offered him a deal with his own publishing company. Just days before dying of cancer, Grant finished the book. Within the year, Twain had turned it into a best seller.