 Prior to the beginning of the war in June 1950 , the 766th completed training and was moved to the front at <unk> to support the KPA 's 5th Division . The North Korean plan was to conduct amphibious landings in <unk> and Imwonjin on the eastern coast using the 766th Regiment , in conjunction with the 549th Unit . These amphibious landings would harass the rear area of the Republic of Korea Army , providing supporting attacks to the planned frontal attack by the KPA 's II Corps directly from the north . The 766th was in position by June 23 and prepared for the attack . The unit was moved to the ports of <unk> and <unk> and loaded into ships . With the 3 @,@ 000 men in the 766th , another 3 @,@ 000 in the 549th , and 11 @,@ 000 men in the KPA 's 5th Division , the 17 @,@ 000 North Korean troops outnumbered the Republic of Korea Army 's ( ROK ) 8th Division 's 6 @,@ <unk> by a ratio of 2 @.@ 1 to 1 . The combination of the frontal attack and the landings were expected to crush the ROK division and prevent reinforcements from moving in to support it . 
