to surround the ROK 3rd Division in the city. By now, the 5th Division and the 766th Regiment had been reduced to a combined strength of 7,500 men to the ROK 3rd Divisions' 6,469. The 766th massed its force again to assist the 5th Division in surrounding and besieging the ROK 3rd Division, which was trapped in the city. The 3rd Division, in the meantime, was ordered to remain in the city to delay the North Koreans as long as possible. It was eventually evacuated by sea after delaying North Korean forces for a considerable time. The rugged terrain of the mountains prevented the North Korean forces from conducting the enveloping maneuvers they had used so effectively against other troops, and their advantages in numbers and equipment had been negated in the fight. By July 28, the division was still embroiled in this fight and the 766th bypassed it and moved toward Chinbo on the left flank of the city. However the 766th had suffered significant setbacks at Yongdok, with substantial losses due to American and British naval artillery fire. Once it arrived in the area, it met heavier resistance from South Korean police and militia operating in armored vehicles. With air support, they offered the heaviest resistance the unit had faced thus far. With the support of only one of the 5th Division's regiments, the 766th was unable to sustain its advance and had to pull back by the 29th. Movement from the ROK Capital Division prevented the 766th Regiment from infiltrating further into the mountains. ROK cavalry and civilian police then began isolated counteroffensives against the 766th. These forces included special counter-guerrilla units targeting the 766th and countering its tactics. South Korean troops halted the advance of the North Koreans again around the end of the month thanks to increased reinforcements and support closer to the Pusan Perimeter logistics network. On August 5, the KPA's 12th Division pushed back the ROK Capital Division in the Ch'ongsong-Kigye area and linked up with elements of the 766th which had infiltrated the area of Pohyunsan. Unopposed, 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