 By this time , however , North Korean logistics had been stretched to their limit , and resupply became increasingly difficult . By the beginning of August , the North Korean units operating in the area were getting little to no food and ammunition supply , instead relying on captured UN weapons and foraging for what they could find . They were also exhausted from over a month of advancing , though morale remained high among the 766th troops . The 766th Regiment specialized in raiding UN supply lines , and effectively mounted small disruptive attacks against UN targets to equip themselves . 
