Sci-Fi ground combat from Squad to Company Level. All rules are compatible.
5150 Star Army - Total - Squad Level infantry combat.
5150 Star Army Total War - Mechs and Vehicles - Add Armored vehicles and Mechs to your Infantry fights.
5150 Star Army Company Commander - Ratch it up as a Star Army Company Commander.
5150 Argus IV - Campaign for Star Army Squad Level.
5150 Star Marine - Squad Level combat for Spaceship Boarding Actions as well as those "unique, special" Missions.