...forces, three brigades of three regiments each, occupied a triangle as follows: at Mitchell's Ford, on Bull Run, one regiment; at Centreville and another point half-way to Germantown, one brigade; at Germantown and Fairfax Court-House, one brigade, with a light battery; at the crossing of Braddock's old road with the Fairfax Court-House and Fairfax Station roads, one regiment; and at Sangster's Cross-roads,...