RENO, Marcus A., soldier, born in Illinois about 1835. He was graduated at the United States military academy in 1857, and assigned to the dragoons. After serving on the western frontier and being made 2d and 1st lieutenant, he was commissioned captain in the 1st cavalry, 12 November. 1861. Subsequently he took part, among other engagements, in the battles of Williamsburg, Gaines's Mills, Malvern Hill, Antietam, and the action at Kelly's Ford, Virginia, 17 March, 1863, where he was wounded, and was brevetted major for gallant and meritorious conduct, He was also present at Cold HARBOR and Trevillian Station, and at Cedar Creek on 19 October. 1864, when he was brevetted lieutenant-colonel. From January till July, 1865, as colonel of the 12th Pennsylvania cavalry, he was in command of a brigade and encountered Mosby's guerillas at Harmony, Virginia On 13 March, 1865, he was brevetted colonel in the regular army and brigadier-general of volunteers for meritorious services during the civil war. After serving as assistant instructor of infantry tactics in the United States military academy, and in the Preedmen's bureau at New Orleans, he was assigned to duty in the west. On 26 December, 1868, he was promoted major of the 7th cavalry, and in 1876 he was engaged with the lieutenant-colonel of the regiment, General George A. Custer (q. v.), in the expedition against the hostile Sioux Indians. Owing to official censure of his conduct in that campaign, he was dismissed the service, 1 April, 1880.