Here, upon the following day, another terrible battle was fought; the Confederates, though but 39,000 strong, repulsing every attack by the Federals and driving them with terrible slaughter back across the river.
Their own loss, however, had been very heavy, and Lee, knowing that he could expect no assistance, while the enemy was constantly receiving re-enforcements, waited for a day to collect his wounded, bury his dead, and send his stores and artillery to the rear, and then retired, unpursued, across the Rappahannock.

Thus the hard-fought campaign came to an end.
Vincent Wingfield was not with the army that retired across the Rappahannock.

A portion of the cavalry had followed the broken Federals to the very edge of the stream, and just as they reined in their horses a round shot from one of the Federal batteries carried away his cap, and he fell as if dead from his horse.

During the night some of the Northerners crossed the stream to collect and bring back their own wounded who had fallen near it, and coming across Vincent, and finding that he still breathed, and was apparently without a wound, they carried him back with them across the river as a prisoner.
Vincent had indeed escaped without a wound, having been only stunned by the passage of the shot that had carried away his cap, and missed him by the fraction of an inch.

He had begun to recover consciousness just as his captors came up, and the action of carrying him completely restored him.