 During the Northern Virginia Campaign that summer, Jackson's troops captured and destroyed an important supply depot for General John Pope's Army of Virginia, and then withstood repeated assaults from Pope's troops at the Second Battle of Bull Run.Jackson's troops played a prominent role in September's Maryland Campaign, capturing the town of Harpers Ferry, a strategic location, and providing a defense of the Confederate Army's left at Antietam.At Fredericksburg in December, Jackson's corps buckled but ultimately beat back an assault by the Union Army under Major General Ambrose Burnside.