answers.input_text: short
answers.span_text: Confederate
questions: who won the 1st battle of bull run
name: First Battle of Bull Run
contexts: First Battle of Bull Run First Battle of Manassas Part of the American Civil War First Battle of Bull Run . Chromolithograph by Kurz & Allison , 1889 Date July 21 , 1861 ( 1861 - 07 - 21 ) Location 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 Result Decisive Confederate victory Belligerents United States ( Union ) Confederate States ( Confederacy ) 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 ( c. 18,000 engaged ) Patterson 's Command : 14 -- 18,000 ( not engaged ) 32,000 -- 34,000 ( c. 18,000 engaged ) Casualties and losses 2,708 ( 481 killed ; 1,011 wounded ; 1,216 missing ) 1,982 ( 387 killed ; 1,582 wounded ; 13 missing )