The Battle of Cedar Creek, or Battle of Belle Grove, was fought on October 19, 1864, during the American Civil War. The fighting took place in the Shenandoah Valley of Northern Virginia, near Cedar Creek, Middletown, and the Valley Pike. During the morning, Lieutenant General Jubal Early appeared to have a victory for his Confederate army, as he captured over 1,000 prisoners and over 20 artillery pieces while forcing 7 enemy infantry divisions to fall back. The Union army, led by Major General Philip Sheridan, rallied in late afternoon and drove away Early's men. In addition to recapturing all of their own artillery seized in the morning, Sheridan's forces captured most of Early's artillery and wagons.

In heavy fog, Early attacked before dawn and completely surprised many of the sleeping Union soldiers. His smaller army attacked segments of the Union army from multiple sides, giving him temporary numerical advantages in addition to the element of surprise. At about 10:00 am, Early paused his attack to reorganize his forces. Sheridan, who was returning from a meeting in Washington, D.C. when the battle started, hurried to the battlefield and arrived around 10:30 am. His arrival calmed and revitalized his retreating army. At 4:00 pm his army counterattacked, making use of its superior cavalry force. Early's army was routed and fled south.

The battle ruined the Confederate army in the Shenandoah Valley, and it was never again able to maneuver down the valley to threaten the Union capital city of Washington, D.C. or northern states. Additionally, the Shenandoah Valley had been a key producer of supplies for the Confederate army, and Early could no longer protect it. The Union victory aided the reelection of Abraham Lincoln, and along with earlier victories at Winchester and Fisher's Hill, won Sheridan lasting fame.