Command Centre:
Worker: Combat Engineer, has M6C Magnum for self-defence, otherwise builds like a normal worker
Medic: Combat Medic
Troop Centre:
Trooper Recruit (Navy Crewman with M6D)
Trooper: UNSC Marine, armed with an M7/C SMG
Heavy Trooper: UNSC Marine, armour from HALO 2. Randomly built as Male, Female, Male with no helmet, Female with no helmet, Male with radio backpack, randomly armed with MA5/B or BR-55
Repeater Trooper: Built separately from the Heavy Trooper, armed with M247 GPMG. Must deploy to attack, the same as the Deployable Cannon.
Anti-Air Trooper: Marine armed with single-barreled rocket launcher
Heavy AA Trooper: Marine armed with Jackhammer Launcher
Grenade Trooper: Marine with a mortar
Mounted Trooper: Marine on ATV with a flamethrower
Heavy Mounted Trooper: Marine on a bulked-up ATV
Advanced Mounted Trooper: Marine with a bigger flame-thrower on an even more bulked up ATV
UNIQUE UNIT: UNSC Sniper. Must deploy to fire. Kills all infantry in one to two hits, but is next to useless against armoured vehicles. Slow rate of fire. Expensive to produce and research. Slower deploy than the Repeater.
Shipyard:
Frigate: Marine Attack Boat, armed with a small machinegun for defense. Primary purpose is fast transport: Can garrison up to four Marines.
Cruiser: Heavy attack ship, armed with artillery and anti-warship cannons. Slower than the Frigate, but much more effective against enemy warships.
Destroyer: Faster, less heavily armoured, and less heavily armed Cruiser
AADestroyer: Mobile SAM
Transport: Slower than the Frigate, but more heavily armoured and can carry more. No defence.
Heavy Weapons Factory:
Pummel: Construction vehicle, like a steamroller but with spikes on the roller. If possible, will be able to construct advanced buildings such as the Fortress and Heavy Turret.
Anti Air Mobile: A tracked vehicle with a SAM
Artillery: M1150 Long Range Projectile Delivery System
Fortress:
Bounty Hunter: Orbital Drop Shock Trooper (Helljumper)
Deployable Cannon: Multiple Launch Rocket System.
UNIQUE BUILDING: SPARTAN Research Lab
UNIQUE UNIT: SPARTAN in MJOLNIR Mark IV Combat Armour. Has no shields, armed with MA5/B. Tougher than Bounty Hunter, but more expensive. Can upgrade to MJOLNIR Mark V, which is shielded, and MJOLNIR Mark VI, which is shielded, tougher, and armed with a BR-55.
UNIQUE UNIT: SPARTAN Sniper. Much the same as Marine Sniper, but shielded and more powerful.
Research: A.I. Implant. Increases movement speed and accuracy of all SPARTANs.
Airbase:
Fighter: Skyhawk Jumpjet
Fast Fighter: Enhanced Skyhawk
Advanced Fighter: Longsword Interceptor
Bomber: Skyhawk with bomb pods mounted on the wings
Heavy Bomber: Enhanced Skyhawk Bomber
Advanced Bomber: Longsword Bomber
Air Transport: Pelican Dropship
NEW BUILDING: UNSC Fleet Command
Fleet Command will construct UNSC Capital Ships, which are very powerful in certain areas.
Missile Frigate: The UNSC Missile Frigate will be able to launch Archer Missiles at a very high rate of fire. These missiles are very effective against fighter craft and lightly armoured vehicles, but less effective against Covenant Capital Ships, heavy vehicles such as the Scarab, and buildings.
Destroyer: The UNSC Destroyer is armed with a powerful Magnetic Accelerator Cannon(MAC) for destroying enemy Capital ships. The Destroyer is mostly useless against fighters and bombers, due to its low rate of fire, but can break through Covenant shields in two to three hits, and is effective at demolishing Covenant buildings.
Cruiser: The Cruiser is the biggest and baddest of all UNSC Capital ships. Its MAC fires three times faster than the Destroyer, and the Cruiser is much more heavily armoured. However, this extra mass means the Cruiser is much slower than its counterparts.
Mech Factory:
Scout: Marine on a motorcycle.
Strike Mech: Warthog armed with Light Anti Aircraft Gun
Heavy Strike Mech: Beefed-up Warthog with LAAG
Mech Destroyer: Warthog armed with Rocket Launcher
Heavy Mech Destroyer: Warthog armed with Gauss Cannon
Assault Mech: Scorpion Main Battle Tank
UNIQUE UNIT: Champion II Assault Battle Tank. Champion II is slower, tougher, and has greater firepower than the Scorpion, but is more expensive.
Jedi Temple:
Padawan: UNSC Marine with an M90 Close Combat Assault Weapon
Jedi Knight: ODST with an M90
Jedi Master: SPARTAN MJOLNIR Mark IV with M90
