United States Regiments & Batteries > District of Columbia

June Attached to Army of Virginia, 3rd Corps, Bayard’s Cavalry Brigade
September Transferred to Army of the Potomac, Cavalry Corps, 2nd Division, 3rd Brigade
December 13
Battle of Fredericksburg

Commanded by Captain William H. Orton

June 9
Battle of Brandy Station
August Transferred to Cavalry Corps, 2nd Division, 2nd Brigade
September 13-17 Advance from the Rappahannock to the Rapidan River
October 9-22 Brisote Campaign
December Transferred to to Middle Dept, 8th Corps. Became Company M, 1st District of Columbia Cavalry