Centralia and Montanya are two other fictional nations America fights around. The Marine Corps go into war-torn Centralia to protect them from evil Montanyan aggression on a regular basis. Some scenarios say it is after a long Centralian civil war where a Montanyan-supported revolutionary force continues disrupting Centralia. Some scenarios deal with an outright invasion of Centralia by Montanyan regular forces. All major scenarios I have tracked down detail joint operations between the Marine Corps and other services or other national armed forces. Rather than focusing on brute firepower, those scenarios focus on using non-standard informational and communications capabilities to disrupt, demoralize, counteract, or otherwise reduce enemy operations and abilities. Whatever the exact scenario, all Marines recognize the long and sordid tale of Centralia and Montanya.