Over the next week, the 766th Regiment and the KPA's 5th Division continued in slow advance south as it met increasing South Korean resistance. United Nations air support began to increase, slowing the advance further. The force continued to occupy the eastern flank, and by July 24 it was advancing from the Chongsong-Andong region and approaching Pohang. On its flank was the KPA's 12th Division. Progress halted as UN aerial and naval bombardment made movement more difficult. At the same time, the North Korean units' supply lines were stretched thin and began to break down, forcing them to conscript South Korean civilians to carry supplies.
