 On August 5 , the KPA 's 12th Division pushed back the ROK Capital Division in the Ch <unk> @-@ <unk> area , and linked up with elements of the 766th which had infiltrated the area of <unk> . <unk> , they began to prepare to attack P 'ohang to secure entry into the UN 's newly established Pusan Perimeter . The Regiment was ordered to begin an attack in coordination with the KPA 's 5th Division . The Korean People 's Army planned simultaneous offensives across the entire Perimeter , including a flanking maneuver by the 766th and the 5th Division to <unk> UN troops and push them back to Pusan . The 766th was not reinforced ; North Korean planners intended it to move unseen around the UN lines while the majority of the UN and North Korean troops were locked in fighting around <unk> and the <unk> <unk> . 
