The Warrenton Junction Raid (May 3, 1863) was a surprise attack by Confederate guerrilla warriors on a Union cavalry detachment during the American Civil War. The raid took place near a railroad junction in Virginia's Fauquier County, less than 10 miles (16 km) from the town of Warrenton. Confederate Major (eventually Colonel) John S. Mosby led the attack against about 100 men from the Union's 1st (West) Virginia Cavalry. At first, the raid was very successful, as many of the Union soldiers surrendered to the rebels. The remaining portion of the surprised force was surrounded in a house, and two of their leaders were wounded. The house was set on fire, and the Union soldiers surrendered. As Mosby's men rounded up prisoners and horses, a detachment of the 5th New York Cavalry surprised the