First Bull Run (Manassas): Why the Union Lost | 21 July 1861

First Bull Run, also known as First Manassas, was fought on 21 July 1861. How did a promising Union advance become a Confederate victory—and what did the defeat reveal about the war ahead? This detailed, illustrated presentation follows the campaign from Washington and the Shenandoah Valley to the fighting at Blackburn’s Ford, Matthews Hill, Henry Hill and Chinn Ridge, and the Union retreat towards Washington. Follow Irvin McDowell’s flanking plan, Joseph E. Johnston’s reinforcements arriving by rail, P. G. T. Beauregard’s defence, and Thomas “Stonewall” Jackson’s stand on Henry Hill. Maps, unit movements and narration explain the fighting over the artillery, the late Confederate counterattack, and why the Union army lost. Across 19 stages, the presentation explores the campaign, battlefield, decisions, aftermath and historical sources. Part of the American Civil War series from John Howard History. CHAPTERS 00:00 Illustrated introduction 01:54 John Howard History introduction and overview 02:30 Why the armies marched 06:54 The campaign converges 10:42 The skirmish at Blackburn’s Ford 14:16 The armies gather 18:30 The battlefield 23:02 Tyler demonstrates at Stone Bridge 26:37 The turning column crosses at Sudley 30:28 The fight for Matthews Hill 33:50 The first Confederate line retreats 37:18 Jackson forms the second defence 41:14 McDowell attacks Henry Hill 44:46 The guns and crest change hands 48:30 Confederate reinforcements counterattack 51:53 The Union retreat 55:52 The immediate reckoning 59:33 Davis, Johnston and Beauregard 1:03:37 The battle changes the war 1:07:11 Why the Union lost 1:11:09 The field today and the sources 1:15:06 Closing and subscription invitation Subscribe to John Howard History for more illustrated history, campaign maps and battle reconstructions. Which factor mattered most at First Bull Run: planning, timing, leadership or reinforcements? Share your thoughts in the comments. VISUALS AND NARRATION Historical photographs, prints and maps are combined with AI-generated illustrative reconstructions. Reconstructions are not archival photographs. Later photographs of ruins and monuments are identified as later views or commemoration, not images taken during the battle. Narration uses an AI-generated voice. IMAGE ACKNOWLEDGEMENTS Historical material sourced through Wikimedia Commons, including collections of the Library of Congress and US National Archives. Creators include Mathew Brady, Levin Corbin Handy, George N. Barnard, Alfred Waud, Currier & Ives, Robert Knox Sneden and Winslow Homer. Modern monument photographs: “Stonewall Jackson monument, Manassas, VA IMG 4325.JPG” — Billy Hathorn, CC BY-SA 3.0. https://commons.wikimedia.org/wiki/Fi... “Bull Run at Manassas National Battlefield Park 04.JPG” — Sj2z, CC BY-SA 3.0. https://commons.wikimedia.org/wiki/Fi... Licence for both: https://creativecommons.org/licenses/... These photographs are proportionately resized and presented with captions on a dark background. The photographs and any adaptations of them retain their stated licence. FURTHER READING National Park Service: The Battle of First Manassas (First Bull Run) https://www.nps.gov/mana/learn/histor... #FirstBullRun #Manassas #AmericanCivilWar