|Commanders|| Marco Rossi|
|Area of Operations||Worldwide|
|Enemies With||Rebel Army, Amadeus Syndicate, Ptolemaic Army|
|Affiliated With||P.F. Squad, S.P.A.R.R.O.W.S, Ikari Warriors|
The Regular Army is the protagonist force from the Metal Slug Series.
It is a world government coalition force used for various tasks. However, they never try to avoid direct conflict, working more without diplomacy. Because of this, they will work through many of their special operation squads and intelligence divisions, even hiring mercenaries if deemed necessary. They are at war with the Rebellion Army for the most part.
- Rumi Aikawa (Sergeant and supplier)
- Madoka Aikawa (Private and supplier)
- Trevor Spacey (Sergeant)
- Nadia Cassel (Private and Secret Services agent)
- Hyakutaro Ichimonji (2nd Lieutenant)
- Tequila (Covert agent)
- Alisa Stewart (Engineer)
- MS-Alice (Regular Army´s A.I created by Marco Rossi)