On April 18, 1864, Pvt. Heidt was detailed to go to Effingham County to get a horse and rejoin the company at Marlowville (?). Pvt. Heidt was captured at Trevillian Station, Va. on June 11, 1864 and sent to Fortress Monroe on June 20th then on July 25th transferred to Elmira N.Y. Prison. He was released July 17, 1865 and described as: complexion, fair; hair, dark; eyes, hazel; height, 5 ft. 41/2 inches.