Killed in the battle of Antietam
(1803-1862) Graduated #2 in the West Point class of 1822. He served as chief engineer under General Zachary Taylor in the Mexican War. He fought gallantly at Fort Brown, Monterey and Buena Vista, and won the brevets of major, lieutenant colonel and colonel in the Regular Army. On May 18, 1861, he was appointed Brigadier General in the regular army and assigned to the command of Washington and its environs by President Lincoln. He later commanded the XII Corps at the battle of Antietam, and led his command into action to support Hooker's I Corps. Seeing his raw recruits waver, he rode into the fray where the action was the hottest. Mansfield was shot down and died from his wounds the next day, Sept. 18, 1862.
Wet plate, albumen carte de visite photograph mounted to 2 3/8 x 4 card. Superb full standing view wearing double breasted frock coat with epaulettes, eagle belt plate, sash, and gauntlets. He poses resting his hands on the hilt of his sword at his front. His cap with U.S. hat wreath insignia sits on the studio column at his side. Back mark: E. Anthony, N.Y., made from a photographic negative in Brady's National Portrait Gallery. Sharp image.