...ed to march, by orders direct from General Lee, and afterward from General Jackson. The entire command was very much fatigued. The brigades of Generals Kershaw and Barksdale had been engaged on Maryland Heights on the twelfth, thirteenth, and fourteenth, and on the fifteenth had been marched from the heights to the line of battle up the valley, formed to oppose that of the enemy below Crampton's Gap. Thos...