The New International Encyclopædia/Slocum, Henry Warner
SLO'CUM, Henry Warner (1827-94). An American soldier, born at Delphi, N. Y. He graduated at West Point in 1852. In 1856 he resigned from the military service and became a counselor-of-law in Syracuse, N. Y. At the outbreak of the Civil War he was appointed colonel of the Twenty-seventh New York Volunteers, which he led at the first battle of Bull Run, where he was severely wounded. He returned to active service in September, 1861, with the rank of brigadier-general of volunteers. He rendered conspicuous service at the battle of Gaines's Mill (q.v.). After the battle of Malvern Hill (July 1, 1862) he was promoted to the rank of major-general of volunteers. He was engaged in the second battle of Bull Run, and in the battles of South Mountain, Antietam, Chancellorsville, and Gettysburg. He later commanded the Twentieth Army Corps, taking part in the capture and occupation of Atlanta. In Sherman's march to the sea Slocum was given the left wing, a command which he held until after Johnston's surrender at Durham Station. In 1865 he resigned from the service and resumed the practice of the law at Brooklyn, N. Y. He was elected to Congress in 1868 and 1870.