Second Manassas Campaign

Northern Virginia Campaign
Part of the American Civil War
John Pope and Robert E. Lee, commanding generals of the Northern Virginia Campaign
Date July 19 – September 1, 1862 Location Northern Virginia Result Confederate victory
Belligerents
United States of America	Confederate States of America
Commanders and leaders
John Pope	Robert E. Lee
Units involved
Army of Virginia Army of the Potomac: III Corps V Corps IX Corps	Army of Northern Virginia
Strength
75,000	48,500
Casualties and losses
16,843 (2,061 killed; 9,897 wounded; 4,885 missing/captured)	9,197 (1,481 killed; 7,627 wounded; 89 missing/captured)

The Northern Virginia Campaign, also known as the Second Bull Run Campaign or Second Manassas Campaign, was a series of battles fought in Virginia during August and September 1862 in the Eastern Theater of the American Civil War. Confederate General Robert E. Lee followed up his successes of the Seven Days Battles in the Peninsula Campaign by moving north toward Washington, D.C., and defeating Maj. Gen. John Pope and his Army of Virginia.

Concerned that Pope's army would combine forces with Maj. Gen. George B. McClellan's Army of the Potomac and overwhelm him, Lee sent Maj. Gen. Thomas J. "Stonewall" Jackson north to intercept Pope's advance toward Gordonsville. The two forces initially clashed at Cedar Mountain on August 9, a Confederate victory. Lee determined that McClellan's army on the Virginia Peninsula was no longer a threat to Richmond and sent most of the rest of his army, Maj. Gen. James Longstreet's command, following Jackson. Jackson conducted a wide-ranging maneuver around Pope's right flank, seizing the large supply depot in Pope's rear, at Manassas Junction, placing his force between Pope and Washington, D.C. Moving to a very defensible position near the battleground of the 1861 First Battle of Bull Run (First Manassas), Jackson successfully repulsed Union assaults on August 29 as Lee and Longstreet's command arrived on the battlefield. On August 30, Pope attacked again, but was surprised to be caught between attacks by Longstreet and Jackson, and was forced to withdraw with heavy losses. The campaign concluded with another flanking maneuver by Jackson, which Pope engaged at the Battle of Chantilly on September 1.