...ves the impression on the reader that Stuart took the whole cavalry corps with him. He knew that Stuart left two brigades of cavalry with Longstreet. 4. Colonel Marshall says that General Lee, at Chambersburg , not having heard from Stuart since he left Virginia, thought that Hooker was still south of the Potomac, until on the night of the 28th he learned through a spy that Hooker was moving northward. T...