 The American counteroffensive of September 3 – 5 west of <unk> , according to prisoner statements , resulted in one of the <unk> <unk> of the war for a North Korean division . Even though remnants of the <unk> 9th Division , supported by the low strength <unk> 4th Division , still held <unk> @-@ <unk> Ridge , <unk> Hill , and the intervening ground back to the <unk> on September 6 , the division 's offensive strength had been spent at the end of the American counterattack . The <unk> 9th and 4th divisions were not able to resume the offensive . 
