First Battle of Bull Run

First Battle of Bull Run Battle of First Manassas
Part of the American Civil War
First Battle of Bull Run. Chromolithograph by Kurz & Allison, 1889
Date Template:Start date Location Fairfax County and Prince William County, Virginia Result Confederate victory
Belligerents
United States (Union)	Confederate States
Commanders and leaders
Political leaders: Abraham Lincoln Military commanders: Winfield Scott Irvin McDowell Robert Patterson	Political leaders: Jefferson Davis Military commanders: P. G. T. Beauregard Thomas "Stonewall" Jackson (WIA) Joseph E. Johnston
Units involved
Department of Northeastern Virginia: Army of Northeastern Virginia Department of Pennsylvania: Patterson's Command (not engaged)	Army of the Potomac Army of the Shenandoah
Strength
Army of Northeastern Virginia: 35,732 Patterson's Command: 14,000–18,000 (not engaged)	32,000–34,000
Casualties and losses
2,708 481 killed 1,011 wounded 1,216 missing	1,982 387 killed 1,582 wounded 13 missing

The First Battle of Bull Run was the first major engagement of the American Civil War.