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BATTLE // August 9, 1862

Battle of Cedar Mountain

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Overview

The Battle of Cedar Mountain, also known as Slaughter's Mountain or Cedar Run, took place on August 9, 1862, in Culpeper County, Virginia, as part of the American Civil War. Union forces under Maj. Gen. Nathaniel P. Banks attacked Confederate forces under Maj. Gen. Thomas J. "Stonewall" Jackson near Cedar Mountain as the Confederates marched on Culpeper Court House to forestall a Union advance into central Virginia. After nearly being driven from the field in the early part of the battle, a Confederate counterattack broke the Union lines resulting in a Confederate victory. The battle was the first combat of the Northern Virginia campaign.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

Cedar Mountain opened the Northern Virginia Campaign on August 9, 1862, establishing an early Confederate advantage as Jackson's forces moved to block a Union advance into central Virginia. Banks attacked Jackson's column near Cedar Mountain in Culpeper County, Virginia, despite facing a force of 16,868 Confederate troops against his own 8,030. Though Union forces initially pressed hard enough to nearly drive the Confederates from the field, a Confederate counterattack broke the Union lines and secured a Confederate victory. Union casualties of 2,353 against Confederate losses of 1,338 reflected the cost of Banks's failed offensive effort. The battle demonstrated Jackson's ability to absorb an aggressive assault and respond decisively, setting the operational tone for the campaign that followed.

Tactics

Union forces under Banks attacked the Confederate column as it marched toward Culpeper Court House. After the Union assault initially pushed the Confederates back and nearly drove them from the field, Jackson's forces launched a that broke the Union lines and secured the Confederate position.

Forces & casualties

Troop strength

  • United States8,030
    medium
  • Confederate States16,868
    medium

Confederate States fielded a 2.1 : 1 numerical advantage

Casualties

  • United States2,353
    medium29% loss rate
  • Confederate States1,338
    medium8% loss rate

Commanders (2)

Confederate States

United States

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6 sibling battles · 2 factions

Last verified June 2026
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