 During the night <unk> established radio communication with the 1st Battalion , 9th infantry . When daylight came <unk> and his group saw that they were surrounded by North Koreans . One force occupied the higher <unk> half a mile above them , formerly held by B Company . Below them , North Koreans continued crossing the river and moving supplies forward to their combat units , some of them already several miles eastward . The North Koreans quickly discovered Task Force <unk> group . They first attacked it at 14 : 00 that afternoon , and were repulsed . That night an estimated company attacked three times , pressing the fight to close quarters , but failed each time to penetrate the tight US perimeter . <unk> of the second day disclosed many North Korean dead on the steep slopes outside the perimeter . 
