Пусанский периметр
The division first started from Youngsan, Seoul on June 10, 1949. The division first saw combat on September 14, 1949, in an operation on Jirisan Mt. to fight Communist guerillas. This division was, after the fall of Taejon, only had a few hundred survivors to participate in the Battle of Pusan Perimeter. During the Battle of Pusan Perimeter, The 7th Infantry Division regrouped with the 3rd, 5th, and 8th infantry regiments to become what formation they have, and destroyed size of two divisions of North Korean army during the Battle of YeongCheon.