...he Stone Bridge, while the Second and Third Divisions, following on the turnpike, were to file to the right, along the farm road, about half-way between Centreville and the bridge, cross Bull Run at Sudley Springs , and bear down against the Confederate rear and left; the First Division, under Tyler, to march at two o'clock in the morning, to be closely followed by the others under Hunter and Heintzelman; the t...