<Table> <Tr> <Th_colspan="2"> First Battle of Bull Run First Battle of Manassas </Th> </Tr> <Tr> <Td_colspan="2"> Part of the American Civil War </Td> </Tr> <Tr> <Td_colspan="2"> First Battle of Bull Run . Chromolithograph by Kurz & Allison, 1889 </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th> Date </Th> <Td> July 21, 1861 (1861 - 07 - 21) </Td> </Tr> <Tr> <Th> Location </Th> <Td> Fairfax County and Prince William County, Virginia 38 ° 48 ′ 53" N 77 ° 31 ′ 22" W ﻿ / ﻿ 38.8147 ° N 77.5227 ° W ﻿ / 38.8147; - 77.5227 Coordinates: 38 ° 48 ′ 53" N 77 ° 31 ′ 22" W ﻿ / ﻿ 38.8147 ° N 77.5227 ° W ﻿ / 38.8147; - 77.5227 </Td> </Tr> <Tr> <Th> Result </Th> <Td> Decisive Confederate victory </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th_colspan="2"> Belligerents </Th> </Tr> <Tr> <Td> United States (Union) </Td> <Td> Confederate States (Confederacy) </Td> </Tr> <Tr> <Th_colspan="2"> Commanders and leaders </Th> </Tr> <Tr> <Td> <P> Political leaders: </P> <Ul> <Li> Abraham Lincoln </Li> </Ul> <P> Military commanders: </P> <Ul> <Li> Winfield Scott </Li> <Li> Irvin McDowell </Li> <Li> Robert Patterson </Li> </Ul> </Td> <Td> <P> Political leaders: </P> <Ul> <Li> Jefferson Davis </Li> </Ul> <P> Military commanders: </P> <Ul> <Li> P.G.T. Beauregard </Li> <Li> Thomas "Stonewall" Jackson (WIA) </Li> <Li> Joseph E. Johnston </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Units involved </Th> </Tr> <Tr> <Td> <P> Department of Northeastern Virginia: </P> <Ul> <Li> Army of Northeastern Virginia </Li> </Ul> <P> Department of Pennsylvania: </P> <Ul> <Li> Patterson's Command (not engaged) </Li> </Ul> </Td> <Td> <Li> Army of the Potomac </Li> <Li> Army of the Shenandoah </Li> </Td> </Tr> <Tr> <Th_colspan="2"> Strength </Th> </Tr> <Tr> <Td> <P> Army of Northeastern Virginia: </P> <Ul> <Li> 35,732 (c. 18,000 engaged) </Li> </Ul> <P> Patterson's Command: </P> <Ul> <Li> 14--18,000 (not engaged) </Li> </Ul> </Td> <Td> 32,000--34,000 (c. 18,000 engaged) </Td> </Tr> <Tr> <Th_colspan="2"> Casualties and losses </Th> </Tr> <Tr> <Td> 2,708 (481 killed; 1,011 wounded; 1,216 missing) </Td> <Td> 1,982 (387 killed; 1,582 wounded; 13 missing) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> First Battle of Bull Run First Battle of Manassas </Th> </Tr>

Who won the battle of bull run union or confederacy