Organized at Chicago, Ill., April 1861, and mustered in May 6, 1861. Ordered to West Virginia June 15 and reported at Parkersburg, W. Va. Assigned to duty as Body Guard to Gen. George B. McClellan, Commanding Army of West Virginia. West Virginia Campaign July 6-17. Battle of Rich Mountain July 10-11. Moved with Gen. McClellan to Washington, D.C., July 25 and guard duty at Headquarters Army of the Potomac till November, 1862. Participating in the Virginia Peninsula Campaign March to August, 1862. Siege of Yorktown. Battles of the seven days before Richmond. Maryland Campaign, Battle of Antietam, Md., and movement to Falmouth, Va.
Mustered out November 25, 1862.