As Mower's troops flanked the Confederate right, another Union division crossed several miles downstream to flank the Confederate left. Under a smokescreen created by rapid artillery and rifle volleys, the Southerners withdrew. Before the retreat, a Union sharpshooter crawled close to the Confederate cannons and killed Lt. Simeon S. Kirby. Pvt. W.M. Larke borrowed a rifle to shoot the Yankee, later recalling, "I took aim at the fellow and hollered at him. When he looked up I shot him clear through." Maj. Gen. Lafayette McLaws said his command was withdrawn with difficulty because it was completely flanked on both sides.