EbonStar is a private military company. They have a Hq or foundation at Earth, which is part of Hub, and are willing to split from Hub and be independent. EbonStar signed or made a contract with Nordita for some land in Shear. Nordita, Celestial, Rank-Rajat, Pitre, Earhardt Organics (of which Salverin is a division of), and now EbonStar were trying to break free, especially after finding bohrium. But Monsters came, and uh… yeah.
Sol Guard is the military of Hub. The Basilisk Nebula was where the Bode’s world rebellion started, where they were trying to break free from Hub. The Soul Guard crushed them. As Matthew stated above, the ChemTroopers were part of the infantry and the Lazaruz men were privately ordered at one per company.