About two o'clock
I had the chance of speaking to the Captain . He told me that he thought Jackson 's corps was in a close place , but that he had no doubt we should be able to hold our own until Longstreet could force his way to our help . We were between Pope 's army and Washington , and it was certain that Pope would make every effort to crush Jackson . About two o'clock the troops were put in motion , heading west , down the Warrenton pike . It now appeared that only A. P. Hill 's division had marched to Centreville ; the other divisions of Jackson 's corps were at the west , and beyond Bull Run . After matching a mile or two we could see to the eastward and south , great clouds of dust rolling up above the woods , evidently made by a column in march upon the road by which , we had that morning advanced from Manassas to Centreville . We knew that Pope 's army -- or a great part of it -- was making that dust , and that Pope was hot after Jackson .