Was fought in Prince William County, Virginia, near the city of Manassas
Irvin McDowell and Robert Patterson of the Union and P.G.T Beauregard and Joseph E. Johnston of the Confederacy were the leaders of their armies, along with "Stonewall" Jackson.
The Union had 28,000-35,000 while the Confederates had 32,000-34,000.
The casualties of the Union were 2,896 and the casualties of the South was 1982.
The battle was fought at Bull Run because that was where the Union wanted to flank the South