Crusader forces along the now-quiet frontline reel under a sudden and unending assault by a combined Stratos and Monarchy force. The civilian population of Old Perth are moved to the underground city beneath Altoberenfestung and a counter attack is launched, led by the Perthian 8th Bipedal Armored Division and their 4th Battalion, whose [i]Liberty-Prime[/i] class mechs lead the charge against overwhelming Monarchy forces.