There are seveal groups, including light, medium and heavy class. They're for said difficulty of problem, and if one troop fails, the class may be brought up.
Rank 1 : Bodyguard [Light Class]
The weakest troop, Usually sent in for scouting missions or to protect diplomats.
Weapons include light assault and pistol weaponry
Rank 2 : Officer [Medium Class]
A good unit for small-scale wars and crimes. Usually used to resolve homeland security issues.
Weapons include assault weaponry.
Rank 3 : Shield [Heavy Class]
A heavy unit for dealing with war crimes and riots
Weapons include a form of riot shield and heavy assault
Rank 4 : Hidden [Heavy Class]
A stealth-class unit for taking out people of interest quietly.
Weapons include silenced pistols and light assault [if needed]
Rank 5 : Offensive [Extreme Class]
A heavy beam-focused class for taking out armies of people.
Weapons include heavy assault, artillery, and beam weapons]
Rank 6 : Defensive [Extreme Class]
A heavy shield-based class using state-of-the-art defensive technology
Weapons include heavy assault, beam, and shield weapons.
Rank 7 : Calamity [Extreme Class]
A extremely powerful but rare class for taking out entire countries
Only a few exist, and they use heavy beam weapons and Alice Matter-based weaponry
The Military Advisor himself.