From the Rapidan.
Orange C. H., Dec. 4.
--Two hundred and fifty more prisoners were received here last night, picked up by our cavalry in their pursuit of the enemy.
They represent five corps of infantry and three divisions of cavalry.
Our scouts report that the enemy's infantry have fallen back to Fauquier, behind the Rappahannock, leaving only cavalry in Culpeper.
They burnt and destroyed everything in the country occupied by them on this side of the river, reducing nearly all the inhabitants to beggary.