(September 17, 1862.)
Colquitt's Brigade formed line soon after sunrise, southwest of Mumma's house, in support of Trimble and Ripley. It followed Ripley across the Smoketown Road and formed on his right.
After a severe engagement, involving heavy loss, it retired to the west end of the Bloody Lane and assisted in checking the advance of French's Division of the Second Corps. Later in the day, portions of the Brigade acted with Evans' Brigade in checking the Federal advance on the Boonsboro Pike.