...withdrawn to the north side of the Rappahannock. In effecting this operation, the enemy followed the rear-guard of cavalry under Major-General Pleasanton, engaging him from Culpeper CourtHouse to Brandy Station , where, when General Pleasanton being reinforced by Buford, (who had been compelled to recross the Rapidan, after proceeding as far as Morton's Ford,) the enemy was held in check till evening, when t...