First Battle of Bull Run

 (21 Jul 1861-21 Jul 1861) - A U.S. Civil War Battle fought between Union forces under Brigadier General Irvin McDowell,, USA, and Confederate forces under Brigadier General P.G.T. Beauregard,, CSA. Known by Union forces as First Battle of Bull Run, known by Confederate forces as First Manassas. The battle was fought near the town of Manassas in Prince William and Fairfax Counties, Virginia and resulted in a Confederate victory.

Current Status
Part of the Manassas National Battlefield Park, Prince William County, Virginia

Sources:
 * Civil War Sites Advisory Commission Report on the Nation's Civil War Battlefields

Links:
 * NPS - Manassas National Battlefield Park
 * Wikipedia - Manassas National Battlefield Park
 * Wikipedia - First Battle of Bull Run