Grant was finally given the freedom to maneuver and fight as he saw fit. The plan was to move along the Mississippi and isolate Vicksburg from support by Pemberton's army. The Confederate forces continued to harass the Union Army, disrupting communications and, in a surprise assault by Van Dorn, actually taking and destroying the strategic federal supply depot at Holly Springs. Nathan Bedford Forrest was active, but unsuccessful. There were skirmishes in the West at Gallatin and Nashville, culminating in the Battle of Murfreesborough and Stone River.