 At dawn on August 11 , one 300 @-@ man battalion of the 766th Regiment entered the village of P 'ohang , creating a state of alarm among its populace . The village was only protected by a small force of South Korean Navy , Air Force and Army personnel comprising the rear guard of the ROK 3rd Division . The South Korean forces engaged the 766th forces around the village 's middle school with small @-@ arms fire until noon . At that point , North Korean armored vehicles moved in to reinforce the 766th troops and drove the South Koreans out of the village . 
