It became part of II Corps after the first fall of Seoul, and was part of the defensive line to slow the North Korean advance from Seoul to Taejon. It subsequently fought in the Battle of Pusan Perimeter.
It was subsequently integrated into II Corps following the initial capture of Seoul, and played a role in defending the defensive line intended to impede the North Korean push from Seoul to Taejon. It then participated in the Battle of Pusan Perimeter.