...w men rallied by Grigsby and Stafford, had retired from the field. The facts were, as I subsequently ascertained from the brigade commanders, that, at light, after skirmishing along the front of Lawton 's and Trimble's brigades in a piece of woods occupied by him, the enemy had opened a very heavy enfilading fire from the batteries on the opposite side of the Antietam, and then advanced very heavy c...