The main human adversary for FedArms Corporation is the People's Liberation Army of the Greater Asian Hegemony. This is essentially quasi-Communist China after they've conquered the rest of east Asia except for Japan (a member of the Corporate Federation).
You've seen their elite troops already, the Redcaps. Here is a selection of their vehicles.
Two Patrol Vehicles and Heavy Weapons Drones
Drones from Khurasan; Trucks are Hot Wheels
Another shot of the Patrol Vehicles
An aerial asset, a laser-armed helicopter. The laser is in a housing under the chopper.
Repainted Matchbox with a turret from the bits box.