2558, the United Nations Space Command found an outer colony occupied by humans, upon discovery the UEG authorized Delta Detachment to invade the world to take the world into UNSC rule, Orbital Drop Shock Trooper squadrons Alpha-6 and Tombstone-24 were first deployed into what would later be known as the Republic of Codea, as marine Baker Batallion loaded into pelicans and started an invasion from the west taking the scorch Republic, flareconia, and finland in a matter of hours. by the 5th day the UNSC occupied the entire world and Delta Detachment left orbit with army troops landing to keep occupation