...ition, but after marching some distance north of the turnpike in the direction of Thoroughfare Gap no enemy was found. McDowell, after sending Rickett's division to the gap to retard the advance of Longstreet , moved it direct to Manassas and not down the Warrenton pike; so finding this pike clear of his enemy, he halted, and, keeping his flanks guarded by cavalry, watched it, while ever and anon he turned...