General Warren, born in Cold Spring, N. Y., January 8th, 1830, died in Newport, R. I., August 8th, 1882, was graduated from the United States Military Academy in 1850, and assigned to the Topographical Engineers as brevet second lieutenant. At the beginning of the Civil War he entered active service as lieutenant colonel of the Fifth New York Volunteers, of which regiment he became colonel on August 31st, 1861. His regiment was ordered to Fortress Monroe, and he took part in the battle of Big Bethel. During the remainder of the year he was stationed at Baltimore, where he constructed the fort on Federal Hill. In the spring of 1862 he joined the Army of the Potomac, serving in the Peninsular campaign and at Yorktown. He was given a brigade in the Fifth Army Corps in May, with which he covered the extreme right of the army and took part in the capture of Hanover Courthouse, the pursuit of Confederate cavalry under Stuart, the battle of Gaines's Mill, the affair at Malvern Hill and subsequent battle, and the skirmish at Harrison's Landing. His brigade was then sent to re-enforce General Pope, and he participated in the battle of Manassas, was engaged at Antietam and the battle of Fredericksburg. On September 26th, 1862, he was appointed brigadier general of volunteers for his services at Gaines's Mill. On March 3rd, 1863, he was appointed chief of engineers of the Army of the Potomac, and during the Chancellorsville campaign he took part in the action on Orange Pike, the storming of Marye's Heights and the battle of Salem. He continued as chief of engineers under Meade, and was engaged at Gettysburg, where he seized Little Round Top. On August 11th, 1863, he was made major general of volunteers. He participated in the battles of the Wilderness campaign and those around Petersburg. He received the successive brevets in the United States Army up to major general.- Frank Leslie, 1896