 The American counteroffensive of September 3 – 5 west of Yongsan , according to prisoner statements , resulted in one of the bloodiest debacles of the war for a North Korean division . Even though remnants of the NK 9th Division , supported by the low strength NK 4th Division , still held Obong @-@ ni Ridge , Cloverleaf Hill , and the intervening ground back to the Naktong on September 6 , the division 's offensive strength had been spent at the end of the American counterattack . The NK 9th and 4th divisions were not able to resume the offensive . 
 The American counteroffensive of September 3 – 5 west of Yongsan , according to prisoner statements , resulted in one of the bloodiest debacles of the war for a North Korean division . Even though remnants of the NK 9th Division , supported by the low strength NK 4th Division , still held Obong @-@ ni Ridge , Cloverleaf Hill , and the intervening ground back to the Naktong on September 6 , the division <a href='null_genetive' title='1'><mark>'s</mark></a>offensive strength <a href='been_done' title='2'><mark>had</mark></a> been spent at the end of the American counterattack . The NK 9th and 4th divisions <a href='negative_concord' title='3'><mark>were</mark></a> <a href='negative_concord' title='4'><mark>not</mark></a>able to resume the offensive . 
The American counteroffensive of September 3 – 5 west of Yongsan , according to prisoner statements , resulted in one of the bloodiest debacles of the war for a North Korean division . Even though remnants of the NK 9th Division , supported by da low strength NK 4th Division , still held Obong @-@ ni Ridge , Cloverleaf Hill , and tdaintervening ground bck to the Naktong on September 6 , thdaivision  offensive strength done been spent at the end of the American counterattack . Theda 9th and 4th divisions ain't able to resume the offensive .