 His friendship with Stuart is important. Stuart is wounded at Yellow Tavern. The attack on Yellow Tavern is made by a man named Sheridan, who's very important for what happens next. But we need to turn to a response by the Confederate cavalry to that raid by Dahlgren and Kilpatrick. The book is The Unvanquished. I'm John Batchelor. Stay tuned for more of CBS Eye on the World with John Batchelor.