Magruder was forced to give up the two brigades from Huger's division at 2 p.m. and was faced with the problem of attacking Sumner's 26,600 men with his own 14,000. He hesitated until 5 p.m., when he sent only two and a half brigades forward. Brig. Gen. Joseph B. Kershaw commanded the left flank, Brig. Gen. Paul J. Semmes the center, and Col. William Barksdale (Griffith's Brigade) the right. Franklin and Brig. Gen. John Sedgwick were on a reconnaissance to the west of Savage's Station when they saw Kershaw's brigade approaching. Their immediate assumption was that these were men from Heintzelman's corps, but they soon realized their mistake. This was the first indication of Heintzelman's unannounced departure and Sumner, for one, was particularly outraged, refusing to speak to Heintzelman the following day. Union artillery opened fire and pickets were sent forward to meet the assault.