while the right wing of kershaw's brigade attacked into the wheatfield, its left wing wheeled left to attack the pennsylvania troops in the brigade of brig. gen. charles k. graham, the right flank of birney's line, where 30 guns from the iii corps and the artillery reserve attempted to hold the sector. the south carolinians were subjected to infantry volleys from the peach orchard and canister from all along the line. suddenly someone unknown shouted a false command, and the attacking regiments turned to their right, toward the wheatfield, which presented their left flank to the batteries. kershaw later wrote, "hundreds of the bravest and best men of carolina fell, victims of this fatal blunder."