Infantry
The class of unit that forms the backbone of every military forces.
Security Forces
The most basic component for colony self-defense.
Infantry
Standard infantry with improved offensive capabilities.
Mechanized Infantry
Infantries with support of armored vehicles enhancing their strategic mobility and offensive firepower.
Heavy Infantry
Infantries equipped with heavy weapons for a more defensive approach.
Airmobile Infantry
By harnessing airborne advantage using helicopters and VTOL vehicles, it is easily the best type of assault troops.
Vehicle
The crucial component for offensive. Often has higher mobility and firepower than infantries.
Armored Car/Recon Rover
It's a quite affordable option for establishing a mechanized force, although not the most efficient.
Tank
The badass armored fighting vehicles.
MBT (Main Battle Tank)
In case diplomacy fails, bring in the 125mm caliber "liberty delivery"!
Indirect Fire Units (Artillery)
Fire support units crucial for some hard-hitting firepower.
Motorized Artillery
Simple mortars or rocket launchers mounted onto a truck, or a half-track.
Heavy Artillery
Improved artillery for bombardment of longer range.
Theatre Defense System
Artillery specially designed for obliterating aerospace units.
Ballistic Missile
One-off long range firepower that are effective against all types of units (including aerospace units).
Tactical Nuke
Nuclear launch detected
Aerospace Units
Theater defense systems can destroy aerospace units easily, but aerospace units has the advantage of operations generally not restricted by terrain.
Orbital Strike Satellite
Global defense initiated
Shuttle
Aerospace transport.
Aerospace fighter
Aerospace unit primarily for defending airspace. Can attack non-aerospace units if needed.
Naval Units
This one can be quite situational, depending on whether there is a sea on the map.
Patrol Boat
Lightly armored and lightly armed naval melee unit.
Gunboat
Patrol boat with a bigger gun capable of indirect fire.
Destroyer
Backbone for a formal navy.
Battlecruiser
Large battle vessel with powerful long range weapons.
Submarine
Ship-sinking specialist.
TDS Cruiser
Naval version of theater defense system.
Lander
Self explanatory. A naval transport.