 Complete the following phrase:  Whaling participated in the Battle of the Punchbowl in AugustSeptember 1951, which was one of the last battles of the movement phase of the Korean War and during which 1st Marine Division killed over 3,000 of North Korean troops. The rest of the year and early 1952, spent division on the Jamestown Line, the UNs Main line of resistance and saw only occasional fighting. Upon the detachment of General Thomas in January 1952, Whaling remained with 1st Marine Division under new commanding general John T. Selden, another comrade from 