Squaddie:
Heavy Armaments (Allows soldier to use Gauntlet.)
Executioner (improved crit chance and aim on weakened targets)
Gun Bash (Dash up to a target and Strike them with your primary weapon.)

Anti Armor Tree
Corporal: Fire in the Hole (Rockets are more accurate.)
Sergeant: Concussive Rocket (Fire a special concussive rocket which has a high chance to either stun or disorient targets in an area.)
Lieutenant: Javelin Rockets (your rockets travel farther.)
Captain: Extra boom (you carry one additional rocket into battle for each rocket equipped and gives your Lw2 Gauntlet an extra rocket as well.)
Major: Biggest Booms (Same as vanilla Skill.)
Colonel: Bunker buster (Fire a powerful anti armor/Building rocket)

Survivor Tree
Corporal: Demolition (Same as vanilla Skill.)
Sergeant: Fortify (Activate to grant +20 defense until the beginning of the next turn. Does not cost an action. Has a 5-turn cooldown.)
Lieutenant: Padded Armor: Your gear includes an extra layer of protection, granting two extra points of HP and 50% less damage from explosive attacks.
Captain: Weapon Specialist (Deal +1 damage with primary weapons.)
Major: Panic Shot (You load your gun with a special type of ammo that causes a target to panic. Uses 2 ammo, 4-Turn cooldown.)
Colonel: Saturation Fire (Same as vanilla Skill.)

Trooper
Corporal: Strong Arm (+1 damage and +10 aim toward melee attacks.)
Sergeant: Guided Rocket (Soldier carries and can fire an advanced guided Rocket.)
Lieutenant: Open Fire (Gives a 25% chance to take a free reaction shot at newly revealed enemies when not concealed.)
Captain: Fire and Steel (Gauntlet deals +1 damage.)
Major: Butcher (Deal +25% more damage to organic enemies, and also gain +10 aim against them as well.)
Colonel: EMP missile (Strong anti robot missile)