Shin Kidou Senki Gundam Wing

Following a prolonged period of conflict, a group of former soldiers successfully established peace between Earth and the colonies by defeating the forces of Oz and White Fang. In the aftermath, various surviving combatants have regrouped into new organizations. One former soldier now operates as a lone enforcer of peace, targeting and dismantling hidden weapon caches, while a former ruler of the Earth Sphere works to preserve peace through political means. A newly uncovered automated weapons facility near Mars threatens this fragile peace, prompting the former soldiers to reactivate their mobile suits for another confrontation.