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

   On the night of September 16, 1862, Anderson's Brigade bivouacked on either side of the Boonsboro Turnpike near the end of the Sunken Road. On the morning of the 17th it advanced by the way of the ravine and Piper's cornfield to and beyond this point, but being forced back, formed line a few feet north of this on the right of Rodes' Brigade. It withstood several charges of Richardson's Division, Sumner's Corps, but shortly after noon, was compelled to retire in the direction of Sharpsburg. It reformed on the Hagerstown Pike, southwest of Piper's House, and assisted in checking the Federal advance in that direction.