The War in the Continent of Centaura began after Corvus and Antares invaded Cetus. You can be any Nations ranging from the Empire of Cetus, Kingdom of Aquila, Federatsiya Ursa, Antares Imperium, Corvus Confederations, Republic of Riaa, United Columban Territories, Reino de Centauri, Imperio Tucani, Lacerta, Federation of Libra, Republic of Orion.

Be a Soldier, a Civilian, an Irregular (For Aquila only), or an Immigrant from Any Nation

Fight for the Country you picked and be in any known battles in Centaura. Be one of the Enlisted with the Ranks of Private to Sergeant Major of the Army if you are in the Army, Sergeant Major of the Marine Corps if you are in the Marines (Idk if their are), Chief Master Sergeant of the Air Force if you are in the Air force, and Master Chief Petty Officer of the Navy if you are in the Navy.

Basically, do whatever the Hell you want :)