...00 strong, consisting of infantry, artillery, and cavalry, drove in our videttes to White Oak Swamp bridge, where they were held in check during the day by the 10th cavalry regiment, under command of Lieut. Col. McGruder . Some ten of our videttes are missing, though it is believed that most of them will return to camp. Two of the enemy's cavalry were killed by the pickets in their retreat. Yesterday our scouts ...