Organized at Elmira, N. Y., September 27, 1861. Moved to Gettysburg, Pa., December 24, and duty there till March, 1862. Duty at Havre de Grace and Baltimore, Md., Middle Department and in the Defences of Washington, D. C., till August, 1862. Attached to Bayard's Cavalry Brigade, Army of Virginia. August-September, 1862. Bayard's Brigade, Cavalry Division, Army of the Potomac, to January, 1863. 1st Brigade, 3rd Division, Cavalry Corps, Army of the Potomac, to June, 1863. 2nd Brigade, 2nd Division, Cavalry Corps, June, 1863. 3rd Brigade, 2nd Division, Cavalry Corps, to August, 1863. 2nd Brigade, 2nd Division, Cavalry Corps, to May, 1864. 1st Brigade, 2nd Division, Cavalry Corps, to June, 1865.
