The battery saw its first action in the Battle of Aldie on 27 April 1863, suffering no casualties. It returned to Fairfax Court House three days later and when the Gettysburg campaign began marched from Fairfax Court House to Drainsville on 24 June. Continuing via Frederick and Taneytown, Maryland, the battery arrived at Gettysburg on 2 July. It fought in the Battle of Gettysburg on 3 July with the loss of one man killed and four wounded. Another was wounded two days later, before the battery marched from the battlefield on 8 July for Berlin, Maryland via Creagerstown and Boonsboro. From Berlin the battery moved to Warrenton Junction via Uniontown, Virginia and Piedmont. After its arrival at Warrenton on 25 July, the battery moved forward to rejoin the army at Culpeper Court House.