(1833-87) Graduated in the West Point class of 1857. He resigned his commission in the U.S. Army in 1861, and became a colonel in the Missouri militia. Soon after he was commissioned lieutenant colonel of the 3rd Arkansas Battalion, and colonel of the 3rd Confederate Infantry. Highly commended by his superiors for his conduct at Shiloh and Prairie Grove, he was promoted to brigadier general to rank from Nov. 15, 1862. Marmaduke twice raided into Missouri in 1863, and took part in the attack on Helena, Arkansas, in July of that summer. During General Sterling Price's defense of Little Rock in September, Marmaduke was in command of the cavalry. He here fought a duel with General L.M. Walker which resulted in Walker's death. Active in the Red River campaign of 1864, he later accompanied Price on another raid into Missouri; and on the retreat, while in command of the rear guard, was captured at Mine Creek, on Oct. 25, 1864, and sent to Fort Warren Prison where he remained until July 1865.

Wet plate, albumen carte de visite photograph, mounted to 2 3/8 x 3 5/8 card. Mount is trimmed. Standing view, wearing a double breasted Confederate frock coat with rank of brigadier general, and braiding visible on his sleeves. Back mark: E. & H.T. Anthony, New York, From Photographic Negative in Brady's National Portrait Gallery. Scarce.