On the left of the Sixth Corps' formation, Truman Seymour's division, led by Colonel J. Warren Keifer's brigade, dispersed MacRae's North Carolina brigade. Keifer directed his leading regiment to pass through an opening in the obstructions which Union soldiers had spotted earlier. Keifer's front ranks drove through the Confederate pickets with unloaded rifles and moved toward the abatis in front of the main line. After breaking the abatis, pieces of which Keifer's men used to bridge the moat in front of the works, Keifer's regiments quickly drove off the 28th North Carolina Infantry Regiment, captured 10 pieces of artillery, a large number of prisoners, three battle flags and Major General Henry Heth's headquarters flag.