Garland's Brigade, D. H. Hill's Division

   On the night of September 16, Garland's Brigade bivouacked in the fields southeast of Roulette's house. Early on the 17th, it moved to the support of Ripley and Colquitt, crossed the Smoketwon Road a few feet east of this point, made effort to form on Colquitt's right, but was thrown into confusion and halted in the woods, under cover of boulders, rock ledges and rolling ground, a few yards in advance of this. The advance of Greene's Division, Twelfth Corps, struck it in the flank and caused it to retire in disorder across the Mumma fields; a part of the Brigade rallying in the west end of the Sunken Road and joining a remnant of Colquitt's Brigade, the remainder retreating to Sharpsburg, where it was partially rallied and assisted Evans' Brigade in checking the advance of the Federals on and south of the Boonsboro Pike.