One Species, One Realm! In 2570, the six Great Houses of the Inner Sphere united to create the Star League, promising to bring an end to the generations of warfare that engulfed the worlds mankind now called home. Shortly thereafter, to seal their alliance, they turned against the various independent realms of the Periphery. Over the next twenty years, the so-called Reunification War would rage, claiming more lives than the savagery of the Age of War before it, all to realize House CameronÕs dream of a united humanity - at any cost! Historical: Reunification War describes the first grand military campaign of the newborn Star League against the collected realms of the Periphery.