The two most important weapons were the Strider Combat Vehicles and the Foxhound-class Infantry Mechs.
As for the former, there's no need to say more. The reason why they didn't equip larger vehicles than the Strider Combat Vehicle, such as the Lion Tank, was that the combat environment inside a starship did not quite allow for the Lion to move around everywhere. Although the Strider was quite big, it was still two sizes smaller than a heavy tank and could still run on many of the main roads inside the starship.