After the end of the Battle of Gettysburg and the subsequent pursuit of the Confederate Army, the regiment was assigned to duty on the Orange and Alexandria Railroad. This lasted until September 12, when it was part of an advance from the Rapidan to the Rappahannock River. The regiment then participated in the Bristoe and Mine Run campaigns, the latter ending on December 2. Afterward, the regiment encamped for the winter at Stevensburg, Virginia, until May 3, 1864.