During this visit [to New Orleans to consult with Gen. Banks] I reviewed Banks’ army a short distance above Carrollton. The horse I rode was vicious and but little used, and on my return to New Orleans ran away and, shying at a locomotive in the street, fell, probably on me. I was rendered insensible, and when I regained consciousness I found myself in a hotel near by with several doctors attending me. My leg was swollen from the knee to the thigh, and the swelling, almost to the point of bursting, extended along the body up to the arm-pit. The pain was almost beyond endurance.
Personal Memoirs of Ulysses S Grant, Chpt. xxxix