The map shows the area surrounding the Bull Run Mountains including Centreville and Kellysville, Va. As part of the Second Bull Run Campaign, Pope's U.S. Army of Virginia assigned to protect Washington, the Shenandoah Valley and draw Lee away from the defense of Richmond.  Lee split his army, and Jackson's brilliant maneuvering thoroughly confused Pope, and allowed Longstreet  to join with reinforcements. While Longstreet's failure to begin an immediate attack deprived Lee of a crushing victory, Pope still was dealt a tactical defeat and used Stone bridge to retreat over Bull Run.
Sneden, Robert Knox
1862-08-26
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