Loadout:
Cannon
Sword

Squaddie:
Suppression
Slice (Attack an adjacent target for 1 action)

Corporal:
Shredder
Holo Targeting
Bulletswarm (Take Standard shots for 1 action point)

Sergeant:
Chain Shot
Demolition
Steady Hands

Lieutenant:
Weapon Specialist (+1 dmg with primary weapons)
Fortitude (+10 defense)
Cool Under Pressure (+10 aim and can crit on overwatch)

Captain:
Hail of Bullets
Untouchable
Interupt (A form of overwatch that lets you take an action instead of reaction fire)

Major:
Weapon Expert (+2 dmg with primary weapons)
Overdrive (Gain 1 action point, can be used every 4 turns)
Long Reach (confers squadisght and longwatch)

Colonel:
Gatling Fire (take 3 shots at a target, each with a -15 aim penalty)
Saturation Fire
Kill Zone

GTS:
Iron Resolve (+10 defense & willpower)