 In the course of this march, the 22nd was detached from their brigade and assigned to picket duty.As a result, the regiment played no role in the subsequent Second Battle of Bull Run on August 30, 1862, in which the rest of their brigade was heavily engaged.Following the disastrous defeat of Pope's army at the Second Battle of Bull Run, the Army of the Potomac, with McClellan still in command, was quickly reorganized outside of Washington during the first week of September 1862.