On July 25, the Iron Brigade returned to Warrenton, Virginia, and then proceeded back to their previous position on the Rappahannock. In October, Lee launched a brief counter-offensive at Bristoe Station which sparked a series of maneuvers and skirmishes known as the Bristoe campaign. The Iron Brigade participated but did not see significant fighting in either the Bristoe campaign, nor the subsequent Union offensive known as the Battle of Mine Run.