Heavy resistance fighters waged a fierce war against the mechs on Taphao where the fighting spanned for decades. Humans banded together to fortify themselves in the Valley of the Siege where they made their last stand. Soldiers and colonists fought together in devastating attack on the Mech battalions and pushed them back to gain a new foothold. However, the Mechs had a fleet in low orbit and opened fire on everything on the planet, humans and mechs alike. The crusade to extinguish humanity had begun.