...s 17,900, an estimate probably too large; Jackson's estimated strength on the field, at least 20,000. Pope, who was waiting for Sigel to come up, states that he did not intend for Banks to attack Jackson with his corps, but, as the Confederates advanced, cautiously feeling their way, and themselves preparing to be the assailants, Banks threw the brigades of Prince, Geary, Greene and Crawford, and a l...