WARREN, flOUVERNEUR KEMBLE 1830-92). An American soldier, born at Cold Spring. N. Y. Ile graduated at West Point in 1850, and took part as chief topographical engineer in the Sioux Expedition of 1855 and participated in the action of Blue Water. From 1859 to 1861 he was assist ant professor of mathematics at West Point, hut in Slay of the latter year lie accepted a lientenant-coloneley in the Fifth New York Vol unteers. He took part in the battle of Big Bethel on .June 10th. and in August he was com missioned colonel of his regiment. He took part in the Peninsular campaign, and later com manded a brigade of the Army of the Potomac during the Maryland campaign. A few days after the battle ,of Antietam he was commis sioned brigadier-general of volunteers, but in February, 1863, he was relieved of his brigade, and was appointed chief topographical engineer of the Army of the Potomac, a position which he filled at the time of the battle of Fredericksburg. In May, 1863, he was promoted to be a major-gen era] of volunteers, and soon afterwards was ap pointed chief engineer of the Army of the Potomac. At the battle of Gettysburg he was
the first to recognize the importance of Little Round Top, and for his promptness and gal lantry in securing possession of it he was bre vetted colonel in the Regular Army. From March, 1864, to April. 1865. he commanded the Fifth Corps and participated in the important battles of the Richmond campaign. After the battle of Five Forks he was relieved of his com mand by General Sheridan. In Slay, 1865, he re signed his commission in the volunteer service, and during the following years he was employed on surveys and harbor improvements. Ile pub lished several books, including Explorations in the Daeota Country (1855-56) ; Preliminary Re port of Explorations in Nebraska and Dakota in the Trans 18.75.57 (1858) : and An Account of the Fifth Army Corps at the Battle of Fire Forks (1866). Consult the Biographical Memoirs of the National Academy of Sciences, vol. ii. (Wash ington. 1886).