... Flynn, who had been held at Libby Prison, under sentence of death, in retaliation for the execution of two rebel spies, hung in Kentucky by General Burnside, were released. They were exchanged for General W. F. Lee and Captain Winder, who were held by the United States as personal hostages for their safety. The advance of General A. J. Smith's forces, cooperating with General Banks's, and under the comman...