By September 25 he was a lieutenant colonel, now in the 2nd New York Cavalry, which he helped to raise, and it was the mounted arm that brought him fame and infamy.
Den 25. september var han blevet oberstløjtnant, nu i 2nd New York Cavalry, som han hjalp til med at opstille, og det var den beredne våbengren som bragte ham berømmelse og berygtelse.