... Gap, through which Longstreet had marched, there was a sharp engagement, which ended at twilight. Longstreet was held in check for a while by Ricketts's division, and the cavalry of Buford and Bayard , which had fought the battle. Early the next morning (Aug. 29), Ricketts fled to Gainesville, closely pursued. Pope's army was now scattered and somewhat confused. Lee's whole army, now combine...