...d Lane, to the right and rear of Jackson, his right resting on the old Manassas Gap Railroad, which lay between the Warrenton and Centreville turnpike, and the road on which Porter was marching, his ( Longstreet 's) right not coming nearer than about one-half mile of the route over which Porter would march to Gainesville. In fact, if Porter had moved forward, his command would have come square upon Longst...