he 21st we held the line of Bull Run, with our right at Union Mills and our left at Stone Bridge.
EDwell's brigade was at Union Mills, Jones' at McLean's Ford, Longstreet's at Blackburn's Ford, Bonham's at Mitchell's Ford, Cocke at the fords below Stone Bridge, and Evans with Sloan's regiment and Wheat's battalion was at the Stone Bridge.
Holmes' brigade, which had arrived from Aquia Creek, was some three miles in rear of Ewell's position.
My brigade was in reserve to support Longstreet or Jones, as might be required, and Jackson's and parts of Bee's and Bartow's brigades of Johnston's army — which had arrived by the Manassas Gap Railroad--were held as Jones, in the afternoon, made an advance against the battery which I had been ordered to take in the morning, but was compelled to retire with loss.
Bonham and Longstreet moved across the Run in the direction of Centreville just before night, but retired to their former positions on the approach of darkness.
The enemy retreated