The Battle of Chantilly, 1862

September 1, 1862

The Battle of Chantilly took place on September 1, 1862, during the Civil War. The outcome of the battle was a stalemate and it was the last battle of Robert E. Lee's Northern Virginia Campaign.

Thomas Stonewall Jackson, Illustration

Stonewall Jackson. Image Source: Library of Congress.

Battle of Chantilly Summary

The Battle of Chantilly was fought on September 1, 1862, between the United States of America and the Confederate States of America, following the Second Battle of Bull Run. The battle was part of General Robert E. Lee’s offensive against the Union Army and ended in a tactical draw. The Union suffered more casualties than the Confederacy, but strategically it was a victory for the Union as they prevented the Confederacy from achieving its goal of occupying Jermantown. The battle saw the deaths of two Union generals, Isaac Stevens and Philip Kearny. Following the battle, Stonewall Jackson withdrew from the area, and the Union army continued its retreat toward Washington, D.C.

Battle of Chantilly Facts

  • Also Known As: The Battle of Chantilly is also known as the Battle of Ox Hill.
  • Date Started: It started on September 1, 1862.
  • Date Ended: The battle ended on September 1, 1862.
  • Location: Fairfax County, Virginia.
  • Outcome: The result of the battle was inconclusive.
  • Campaign: The Battle of Chantilly was part of the Northern Virginia Campaign.

Prelude to the Battle of Chantilly

In early 1862, Union leaders attempted to bring a quick end to the American Civil War by capturing the Confederate capital at Richmond, Virginia. On March 17, Major General George B. McClellan began moving the 50,000 men of the Army of the Potomac toward Richmond during the Peninsula Campaign. By June, McClellan reached the outskirts of the Confederate capital but ultimately retreated after losing a series of encounters with General Robert E. Lee and his Army of Northern Virginia. These engagements became collectively known as the Seven Days Battles.

Lee Pursues Pope

Dissatisfied with McClellan’s performance, President Lincoln appointed Major General John Pope to command the newly created Army of Virginia. Sensing that McClellan now posed little threat to Richmond, Confederate General Robert E. Lee, took the offensive, before Pope’s army could unite with McClellan’s retreating forces. On July 13, Lee sent 12,000 Confederate troops under the command of Major General Thomas “Stonewall” Jackson, to secure Confederate railroad links with the Shenandoah Valley near Gordonsville, Virginia. Later that month, he redeployed 12,000 more men to support Jackson. In early August, with McClellan’s army in full retreat, Lee dispatched Major General James Longstreet and 30,000 additional troops to support Jackson, and Lee personally took command of the offensive against Pope.

On Thursday, August 28, 1862, Lee’s forces engaged Pope’s army near Manassas Junction, Virginia. By Saturday, Pope’s forces were in full retreat after Confederate soldiers soundly defeated them at the Second Battle of Bull Run. As the Federals fell back to Centreville on their way to the safety of the defensive fortifications surrounding Washington, D.C., Lee ordered Jackson to turn Pope’s right flank and to get between the Union army and the capital. Jackson’s immediate goal was to occupy Jermantown and to block the Warrenton Turnpike leading to Washington.

On August 31, Jackson set out toward the northeast, traveling as far as Pleasant Valley before camping for the night. On the next day, Jackson continued his trek. Realizing that his right flank might be exposed, Pope ordered Major General Joseph Hooker to establish a defensive position to secure Jermantown. With Hooker in his path, Jackson stopped his march four miles northwest of his goal to await reinforcements.

Chantilly Battle Begins

Meanwhile, Pope ordered Brigadier-General Isaac Stevens to establish a second defensive line between Jackson and Hooker. When Jackson received reports of Stevens’s movement, he dispatched Major General A. P. Hill’s division to determine the strength of the Union force assembling in front of him. As the two sides skirmished during a steady drizzle around four o’clock, Jackson began deploying his soldiers at the edge of a forest overlooking a cornfield on the Reid Farm.

General Stevens Mortally Wounded

At 4:30 p.m., Stevens sent a request to the rear for reinforcements and then ordered his division forward to engage the Confederates at the edge of the woods. Almost simultaneously, the rain intensified into a severe thunderstorm that soaked the combatants’ gunpowder, rendering many firearms useless. When the Union attack began to stall at approximately 5 o’clock, Stevens moved to the front to urge his troops forward, where he received a shot to the head, killing him instantly. After Stevens’s death, Colonel Benjamin Christ assumed command of the faltering attack and began to withdraw slowly across the cornfield.

Union Withdraws After General Kearny is Mortally Wounded

As Christ’s soldiers retreated, reinforcements from Major General Philip Kearny’s corps began arriving on the field at approximately 5:15. While Kearny prepared to renew the assault, Jackson solidified his lines at the edge of the woods. At 5:30, Kearny’s men moved forward and engaged Jackson’s right flank. When Kearny discovered that his right flank was exposed because Christ’s men had not advanced as planned, he rode off looking for more troops. After finally enlisting the aid of the 21st Massachusetts, Kearny rode forward to reconnoiter the enemy lines. Between 6 o’clock and 6:30, he rode into the midst of a group of Confederate soldiers who ordered him to halt. Kearny swung his horse around instead and attempted to escape. As the Union general dashed away, a Confederate soldier fired a minie ball into Kearny’s back, killing him almost instantly. After Kearny’s death, the Federals withdrew to the opposite side of the cornfield, and the fighting ended.

Battle of Chantilly Significance

The Battle of Chantilly was a tactical draw. The Union Army suffered approximately 1,300 casualties compared to 800 casualties for the Confederacy. Strategically, however, the engagement was a Union victory. Having failed in his attempt to beat Pope’s forces to Jermantown, Jackson began withdrawing from the vicinity at approximately 11 p.m. The Federals maintained their position until 2:30 a.m. when Pope continued his retreat toward Washington.

Who Won the Battle of Chantilly?

The outcome of the battle was a draw, however, it is considered a tactical victory for the United States.

2 Facts About the Battle of Chantilly

  1. Union generals Philip Kearny and Isaac Stevens were killed during the Battle of Chantilly.
  2. The Battle of Chantilly was the final engagement of Confederate General Robert E. Lee’s Northern Virginia Campaign.

Battle of Chantilly Interesting Facts

Principal Union Commanders

Principal Confederate Commanders

Union Forces Engaged

  • 9th Corps of the Union Army of the Potomac (attached to the Army of Virginia)

Confederate Forces Engaged

  • 2nd Corps of the Army of Northern Virginia

Number of Union Soldiers Engaged

  • Roughly 6,000

Number of Confederate Soldiers Engaged

  • Roughly 20,000

Estimated Union Casualties

  • 1,300 (killed, wounded and missing/captured)

Estimated Confederate Casualties

  • 800 (killed, wounded and missing/captured)

Timeline of the Battle of Chantilly

This list shows the main battles and events that took place before and after the Battle of Chantilly, and how it fits into the chronological order of the Northern Virginia Campaign.

Citation Information

The following information is provided for citations, including APA Style, Chicago Style, and MLA Style.

  • Article Title The Battle of Chantilly, 1862
  • Date September 1, 1862
  • Author
  • Keywords Battle of Chantilly, Battle of Ox Hill, Northern Virginia Campaign 1862, Philip Kearny, Isaac Stevens, Stonewall Jackson, Battle of Chantilly Date, Battle of Chantilly Outcome, Battle of Chantilly Timeline
  • Website Name American History Central
  • Access Date June 13, 2024
  • Publisher R.Squared Communications, LLC
  • Original Published Date
  • Date of Last Update March 17, 2024

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