Organized at Chicago, Ills., April 19, 1861. Moved to Camp Defiance, Cairo, Ills., and duty there till June. Ordered to Clarksburg, W. Va., to join McClellan as escort, and arrived there June 23. Skirmish at Buckhannon June 30. West Virginia Campaign July 6-17. Battle of Rich Mountain July 10. Duty in West Virginia till September. Mustered out September, 1861.