...erson to Gen. Buell, and that I was about to leave the field, but would return in a short time. I had given particular instructions to Capt. J. A. Campbell, my Assistant Adjutant-General, to post Gen. Jackson 's two brigades on a commanding piece of ground, immediately to the right of the Maxville and Perryville road, to hold them there in column, so that they could be moved in any direction occasion requi...