Lee retreated during the night of July 3, and the brigade remained on the field on the 4th. On the morning of the 5th the command started on the march in the same route it had come, keeping on east of the Blue Ridge, the enemy being on the west until the pass at South Mountain leading to Hagerstown was reached. At the latter place, the rebel rear was overtaken and an action seemed imminent, but none occurred as Lee's forces withdrew before the Union attack commenced.