... by the Sixth regulars, when they dashed on the whole brigade. The enemy were taken in flank by another brigade, and though thoroughly overpowered, gallantly out their way out. Two regiments of Gen. Gragg 's brigade, under Col. Wyndham and Col. Kilpatrick, had hot work all the morning, but drove the enemy from the river to Brandy Station. The rebels were numerically superior to us, including our smal...