A map of the afternoon operations of the First Battle of Bull Run or First Battle of Manassas, the initial major land battle of the American Civil War, July 21, 1861. The map shows Bull Run Creek, Young's Branch, the Stone Bridge and Stone House, Warrenton Turnpike, Sudley Road, and is keyed to show Union and Confederate battle positions, including the Union positions of Burnside, Howard, Schenk, Keys, Porter, Wilcox, Sherman, and Franklin, and the Confederate positions of Early, Elzey, and the Confederate Headquarters. The map shows terrain features, woodlands, and the locations of the Henry House, Robinson House, Dogan House, and Chinn House.