In the division's first few months on the line, Chinese forces conducted three raids in its sector. In retaliation, the 245th Tank Battalion sent nine tanks to raid Agok. Two companies of Chinese forces ambushed and devastated a patrol from the 179th Infantry a short time later. In the spring, the division launched Operation Counter, which was an effort to establish 11 patrol bases around Old Baldy Hill. The division then defended the hill against a series of Chinese assaults from the Chinese 38th Army.