pt.i.p.

14.] Rosecrans's messengers had failed to reach McClellan during the 11th, but the sound of the battle was sufficient notice that he had gained the summit and was engaged; and he was, in fact, left to win his own battle or to get out of his embarrassment as he could.

Toward evening McClellan began to cut a road for artillery to a neighboring height, from which he hoped his twelve guns would make Pegram's position untenable; but his lines were withdrawn again beyond Roaring Creek at nightfall, and all further action postponed to the next day.
About half of Pegram's men had succeeded in passing around Rosecrans's right flank during the night and had gained Beverly.
These, with the newly arrived Confederate regiment, fled southward on the Staunton road.

Garnett had learned in the evening, by messenger from Beverly, that Rich Mountain summit was carried, and evacuated his camp in front of Morris about midnight.

He first marched toward Beverly, and was within five miles of that place when he received information (false at the time) that the National forces already occupied it.