George A. Custer’s Union cavalrymen exploit a gap in the lines of retreating Confederate forces.

George A. Custer’s Union cavalrymen exploit a gap in the lines of retreating Confederate forces, attacking near Marshall’s Crossroads west of Sailor’s Creek. Custer captures some artillery and pins Richard Anderson’s Fourth Corps in place. Two Confederate corps under James Longstreet march on to the west, unaware of Anderson’s predicament.