Regular Army

The Regular Army is the protagonist force from the Metal Slug Series.

It is the main armed force of the World Government and is composed of various coalition forces from around the globe. They rarely try to avoid direct conflict, working more without diplomacy. Because of this, they often operate through many of their special operation squads and intelligence divisions, even hiring mercenaries if deemed necessary.

They are at war with the Rebel Army for the most part and are trying to maintain world peace.

The Regular Army is also known for its large and advanced Slugs (mechanical, animal, or stolen) and weapons.

The Super Devil seems to have taken an interest in the Regular Army. It offers them aid but only at extremely dire times.

In When the Cold Breeze Blows Away,they will be returned in World War III that they will battle against Rebel Army. Also,Grand Alliance will be allied with them for stop Donald Morden and Coalition of the Red Star.