Captain Carter says:
The next movement of the enemy was to advance a heavy column on the extreme right, bearing down on what I supposed to have been the right wing of A. P. Hill’s division. Our troops gave way entirely before the column. With three pieces of my battery, aided by two of Lieutenant Elliott’s, this column was shattered and driven back without the assistance (so far as I know) of any infantry whatever. Generals D. H. Hill and Rodes witnessed the firing.
Our troops advanced now on the extreme right, and Burnside’s whole corps was driven back. This virtually closed the operations of the day, but a movement of a rather farcical character now took place. General Pryor had gathered quite a respectable force behind a stone wall on the Hagerstown road, and Col. G. T. Anderson had about a regiment behind a hill immediately to the right of this road. A Maine regiment (the Twenty-first, I think) came down to this hill wholly unconscious that there were any Confederate troops near it. A shout and a volley informed them of their dangerous neighborhood. The Yankee apprehension is acute; the idea was soon taken in, and was followed by the most rapid running I ever saw.