Portrait of Roswell P. Carpenter, 1862-1864. Ann Arbor. Entered service in company D, Twentieth Infantry, at organization, as First Lieutenant. Commissioned July 29, 1862. Mustered Aug. 18, 1862. Division Ordnance Officer, Ninth Army Corps, from Oct., 1862, to Jan., 1863. Commissioned Captain, company K, Jan. 26, 1863. Mustered Feb. 28, 1863. Killed in action at Spottsylvania, Va., May 12, 1864. (Descriptive Roll Twentieth Michigan Volunteers).
