I now directed the centre and right to push forward toward Fox's Gap. Lieutenant Croome with a section of McMullin's battery had come up, and he put his guns in action in the most gallant manner in the open ground near Wise's house. The Thirtieth and Thirty-sixth changed front to the right and attacked the remnant of Garland's brigade, now commanded by Colonel McRae, and drove it and two regiments from G. B. Anderson's brigade back upon the wooded hill beyond Wise's farm at Fox's Gap. The whole of Anderson's brigade retreated further along the crest toward the Mountain House. Meanwhile the Twelfth Ohio, also changing front, had thridded its way in the same direction through laurel thickets on the reverse slope of the mountain, and attacking suddenly the force at Wise's as the other two regiments charged it in front, completed the rout and brought off two hundred prisoners. Bondurant's battery was again driven hurriedly off to the north. But the hollow at the gap about Wise's was no place to stay. It was open ground and was swept by the batteries of the cavalry on the open hill to the northwest, and by those of Hill's division about the Mountain House and upon the highlands north of the National road; for those hills run forward like a bastion and give a perfect flanking fire along our part of the mountain. The gallant Croome with a number of his gunners had been killed, and his guns were brought back into the shelter of the woods, on the hither side of Wise's fields. The infantry of the right wing was brought to the same position, and our lines were reformed along the curving crests from that point which looks down into the gap and the Sharpsburg road, toward the left. The extreme right with Croome's two guns was held by the Thirtieth, with the Twenty-eighth in second line. Next came the Twelfth, with the Thirty-sixth in second line, the front curving toward the west with the form of the mountain summit. The left of the Twelfth dipped a little into a hollow, beyond which the Twenty-third and Eleventh occupied the next hill facing toward the Sharpsburg road. Our front was hollow, for the two wings were nearly at right angles to each other; but the flanks were strongly placed, the right, which was most exposed, having open ground in front which it could sweep with its fire and having the reserve regiments closely supporting it. Part of Simmonds's battery which had also come up had done good service in the last combats, and was now disposed so as to check the fire of the enemy.