Potomac to fight in the Overland Campaign on 15 May. Upon reporting to the army on 5 June, the regiment was assigned to the 1st Brigade of the 1st Division of VI Corps. It fought in the Battle of Cold Harbor between 5 and 12 June and the Siege of Petersburg between 17 June and 10 July. During the latter, it participated in the Battle of Jerusalem Plank Road between 22 and 23 June and the First Battle of Ream's Station on 29 June. With VI Corps, the regiment moved north to Baltimore and Washington, D.C. in pursuit of Confederate cavalry commander Jubal Early between 10 and 12 July, guarding the corps Artillery Brigade. On 14 July the regiment, excluding Company A, was ordered to Baltimore, where it rejoined the 1st Separate Brigade of VIII Corps. Company A remained with the Army of the Potomac to guard the VI Corps Reserve Artillery until rejoining the regiment in September. The regiment served on picket and outpost duty along the line of the Baltimore and Ohio Railroad, and guarded fords of the Potomac River between Georgetown and Point of Rocks until November, when it briefly returned to Delaware for the United States presidential election. Operating in Montgomery County between 7 and 11 October, the regiment continued to serve on the Upper Potomac and on the line of the Baltimore and Ohio. By March 1865, the regimental headquarters was at Monocacy Junction with detachments at Baltimore and Annapolis, among others. In mid-April its detachments helped in the search for the Booth conspirators, one of whom, George Atzerodt, was captured by a squad led by Sergeant Zachariah W. Gimmell on 20 April, and brought to the Relay House camp. The detachments at Relay House were mustered out on 6 June, followed by those at Baltimore on 30 June. During its service, the regiment lost two enlisted men killed in action, while two officers and 47 enlisted men died of disease. It mustered out with a strength of 363, including eleven officers. See also List of Delaware Civil War units Delaware in the American Civil War References Citations Bibliography (Papers of the Historical Society of Delaware, LXII) External links 1st Delaware Cavalry clothing books and volunteer service records at The Civil War in Delaware 1st Delaware Cavalry Rosters Military units and formations established in 1863 Military units and formations disestablished in 1865 Units and formations