...ral Buford, in command of a division of cavalry, advanced from Rappahannock Station, and drove the enemy's cavalry to the vicinity of Culpeper Court-House, where a strong force of infantry being met, Buford was obliged to retire. This reconnoissance, it is believed, had the effect to cause the enemy to withdraw his infantry to the south side of the Rapidan. About the middle of August a considerabl...