First Battle of Bull Run significance

The first land battle of the Civil War was fought on July 21, 1861, just 30 miles from Washington—close enough for U.S. senators to witness the battle in person. Southerners called it the Battle of Manassas, after the closest town. Northerners called it Bull Run, after a stream running through the battlefield.

After a Confederate artillery fired on Fort Sumter in April, members of Congress complained about the Union army's inactivity. They traded rumors that President Abraham Lincoln was delaying military action in order to forge a compromise with the South. They demanded a quick campaign to prevent the Confederate Congress from convening in Richmond. Horace Greeley's New York Tribune summed up the sentiment with repeated headlines that demanded: "Forward to Richmond!" Such outcries pressured Lincoln to launch an offensive. It occurred at Bull Run.

On the morning of July 21, 1861, civilians from Washington rode out to Centreville, Virginia, to watch a Union army made up of very green recruits—they signed up for a 90-day war—march boldly into combat. Men, women, and even children came to witness the predicted Union victory, bringing along picnic baskets and opera glasses. Bull Run soon became known as the "picnic battle." Among the civilian ranks were some of Congress's most powerful senators—many of whom had called for just such a campaign. They quickly learned that war can be unpredictable.

The Union army performed well that morning, but by early afternoon the Confederates had brought in reinforcements, forcing an intense battle over a space known as Henry Hill. When Union generals finally called retreat around 4:00 p.m., the frightened soldiers fled for their lives. "I saw the 12th New York regiment rush pell-mell out of the wood," commented one reporter. Soldiers threw down their weapons and ran from the battlefield, sweeping up civilians in the retreat.

Near the battlefield, a group of senators was eating lunch. They heard a loud noise and looked around to see the road filled with soldiers, horses, and wagons—all headed in the wrong direction. "Turn back, turn back, we're whipped," Union soldiers cried as they ran past the spectators. Startled, Michigan senator Zachariah Chandler tried to block the road to stop the retreat. Senator Ben Wade of Ohio, sensing a disastrous defeat, picked up a discarded rifle and threatened to shoot any soldier who ran. While Senator Henry Wilson distributed sandwiches, a Confederate shell destroyed his buggy, forcing him to escape on a stray mule. Iowa senator James Grimes barely avoided capture and vowed never to go near another battlefield.

Senators returned to Washington "with gloomy faces," noted one reporter, where they delivered eyewitness accounts to a stunned President Lincoln. Only one member of Congress, New York representative Alfred Ely, made it to Richmond that day—as a prisoner of war. The Union army's defeat at Bull Run shocked and sobered members of Congress, making it painfully clear that the war would last much longer than 90 days and be harder fought than anyone had expected. It certainly would be no picnic.

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July 21, 1861

First Battle of Bull Run significance

US Army, Corps of Engineers. Map of the battlefield of Bull Run, Virginia, 1877

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First Battle of Bull Run significance

National Tribune. The first battle of Bull Run. July 21, 1861, 1895

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First Battle of Bull Run significance

Whipple. Plan of the battlefield at Bull Run, July 21st 1861, 1861

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On July 21 1861, Federal forces and Confederate troops converged near Manassas Junction, the junction of the Manassas Gap Railroad and the Orange and Alexandria Railroads. Federal troops hoped to seize the junction and thereby deny Confederate forces the advantages of using the railroads to transport troops or resupply.

The battle developed slowly but eventually involved over 35,000 Federal troops and 32,000 Confederate forces. Federal forces under General Irvin McDowell attempted to flank Confederate positions by crossing Bull Run but were turned back. The end result of the battle was a Confederate victory and Federal forces retreated to the defenses of Washington, DC. One week later, General George McClellan was appointed head of the Army of the Potomac.

The three maps cited below all use the name “Bull Run” to identify the battle. A convention developed during the war whereby Federal maps named battles after local water features (Bull Run, Antietam, etc.) while Confederate maps named battles after local towns (Manassas, Sharpsburg, etc.).

Map Citations

United States Army, Corps of Engineers. Map of the battlefield of Bull Run, Virginia. Brig. Gen. Irvin McDowell commanding the U.S. forces, Gen. [P.] G. T. Beauregard commanding the Confederate forces, July 21st 1861 Compiled from a map accompanying the report of Brig. Genl. McDowell and a map made under the direction of Genl. Beauregard. Published by authority of the Hon. the Secretary of War in the office of the Chief of Engineers, U.S. Army. [S.l.], office of the Chief of Engineers, 1877. 1 map, col., 61 x 92 cm.
Catalog record: http://lccn.loc.gov/99439142

National Tribune. The first battle of Bull Run. July 21, 1861. Washington, Dec 26, 1895. [S.l., 1895] 1 map, 32 x 39 cm., col., on sheet 58 x 42 cm.
Catalog record: http://lccn.loc.gov/99439122

Whipple, Amiel Weeks. Plan of the battlefield at Bull Run, July 21st 1861. 1 ms. map : col., cloth ; 50 x 62 cm.
Catalog record: http://lccn.loc.gov/2009655025


What was the significance of the 1st battle of Bull Run Manassas )? Who won?

Federal forces under General Irvin McDowell attempted to flank Confederate positions by crossing Bull Run but were turned back. The end result of the battle was a Confederate victory and Federal forces retreated to the defenses of Washington, DC.

What was the most important outcome of the First Battle of Bull Run?

Summary of the First Battle of Bull Run The Confederates were able to turn back the assault, forced the Union forces to retreat, and gained a strategic victory.

What happened in 1st battle of Bull Run?

On July 21, 1861, in the first major land battle of the Civil War, a large Union force under General Irvin McDowell is routed by a Confederate army under General Pierre G.T. Beauregard.