... He ordered McDowell with Sigel and Reynolds, to hasten to Gainesville that night, and there intercept Longstreet at the head of Lee's main column; and Reno was directed to move in parallel roads to Greenwich , followed by Kearney's division of Heintzelman's corps, with orders to communicate with, and support McDowell if necessary. Pope, in the mean time, had moved along the railway towards Manassas Junc...