Organized at Chicago, Ills., July 8, 1861. Ordered to West Virginia and attached to 2nd Brigade, Army of Occupation, West Virginia, July to September, 1861. McCook's Brigade, District of the Kanawha, West Virginia, to October, 1861. 2nd Brigade, District of the Kanawha, to March, 1862. (Company assigned to Thielman's Cavalry Battalion as Company "C," December 9, 1861, and to 16th Illinois Cavalry as Company "C" December 25, 1862, but served detached from both these organizations during entire term.) 4th Brigade, Kanawha District, West Virginia, to August, 1862. 2nd Brigade, Kanawha Division, 9th Army Corps, Army Potomac, to October, 1862. Kanawha Division, District of West Virginia, Dept. Ohio, to March, 1863. Averill's 4th Separate Brigade, 8th Army Corps, Middle Department, to June, 1863. Averill's 4th Separate Brigade, West Virginia, to December, 1863. 2nd Brigade, 4th Division, West Virginia, to April, 1864. Reserve Division West Virginia to July, 1864.

SERVICE - At New Creek, W. Va., until August, 1861. Battle of Carnifex Ferry, W. Va., September 10. Moved to Camp Lookout and Big Sewell Mountain September 15-23, thence to Camp Anderson October 6-9. Operations in Kanawha Valley and New River Region October 19-November 16. New River October 19-21. Moved to Gauley and duty there until May, 1862. Advance on Virginia and Tennessee R. R. May 10. Princeton May 11, 16, 17. Wolf Creek May 15. At Flat Top Mountain until August. Flat Top Mountain July 15. Blue Stone August 13-14. Movement to Washington, D.C., August 15-24. Maryland Campaign September 6-22. Frederick City, Md., September 12. South Mountain September 14. Battle of Antietam September 16-17. March to Clear Springs October 8, thence to Hancock October 9. March to the Kanawha Valley October 14-November 17. Duty in the Kanawha Valley until April, 1863. Scouting in Boone, Wyoming and Logan Counties December 1-10,1862. At Buckhannon April, 1863. Operations against Imboden's Raid in West Virginia April 20-May 14. At Buckhannon, Bulltown, Clarksburg, Parkersburg and Weston May to July. Moved to Beverly July 2-7 and duty there until November. Beverly July 14. Shanghai July 16. Martinsburg July 18-19. Averill's Raid through Hardy, Pendleton, Highland, Bath, Greenbrier and Pocahontas Counties August 5-31, Rocky Gap, near White Sulphur Springs, August 25-26. Salt Lick Bridge October 14. Averill's Raid from Beverly to Lewisburg and Virginia and Tennessee R. R., November 1-17. Mill Point November 5. Droop Mountain November 6. Elk Mountain, near Hillsborough, November 10. Averill's Raid on Virginia and Tennessee R. R. December 8-25. March through Elk Mountain Pass to Beverly, December 13-17, and duty at Beverly until April, 1864, and at Harper's Ferry and on Baltimore R. R. until July. Baltimore and Ohio R. R., between Bloomfield and Piedmont, May 5, 1864. Mustered out July 16, 1864.