Human
Vehicles
M12 LRV (Warthog)

The M12 light reconnaissance vehicle, or Warthog, is the standard vehicle of the UEG armed forces. It is fast and maneuverable, but prone to rollovers during hard cornering. A three-barreled machine-gun is mounted in the rear of the vehicle. Armed passengers significantly increase the unit's anti-infantry capacity.
This will probably be my next unit...
M808B Scorpion MBT
The Scorpion Main Battle Tank is primarily an anti-vehicle weapons platform, but it also has very high anti-infantry capabilities. Its ceramic-titanium armor makes it nearly invulnerable to small arms fire, but its deep dead-zone, or the area within which fire from the tank's guns cannot hit targets, puts it at rick from enemy anti-tank infantry. Up to four soldiers may ride on (and fire from) the Scorpion's track pods. Riding on a tank is always hazardous and should be done only when the advantages outweigh the risks.
This I'm already making
Pelican

Longsword Fighter
The Longsword Fighter is presumably the veil of protection launched from Human capital ships to defend against incoming hordes of Covanant fighters and capital ships. The Longsword has a crew of two, although does have a spacious cockpit with other stations open. These stations most likely consist of system monitors and whatnot.
Infantry
Master Chief

You are the Master Chief - all that remains of a classified military project to build a series of genetically enhanced super-soldiers. You are humanity's last and best hope against the Covenant - but you're woefully outmatched, and survival is not guaranteed.
Same unit as Kal-El requested here: http://forums.civfanatics.com/showthread.php?s=&threadid=41669
Marines

A rugged and diverse assortment of soldiers, the Marines on the Pillar of Autumn are fighting a losing battle against the Covenant's superior weaponry and numbers. Under the leadership of Captain Keyes they continue to wage a furious struggle against the Covenant, even as their numbers dwindle. They're the best of the best - but they're only human.
Vehicles
M12 LRV (Warthog)

The M12 light reconnaissance vehicle, or Warthog, is the standard vehicle of the UEG armed forces. It is fast and maneuverable, but prone to rollovers during hard cornering. A three-barreled machine-gun is mounted in the rear of the vehicle. Armed passengers significantly increase the unit's anti-infantry capacity.
This will probably be my next unit...
M808B Scorpion MBT

The Scorpion Main Battle Tank is primarily an anti-vehicle weapons platform, but it also has very high anti-infantry capabilities. Its ceramic-titanium armor makes it nearly invulnerable to small arms fire, but its deep dead-zone, or the area within which fire from the tank's guns cannot hit targets, puts it at rick from enemy anti-tank infantry. Up to four soldiers may ride on (and fire from) the Scorpion's track pods. Riding on a tank is always hazardous and should be done only when the advantages outweigh the risks.
This I'm already making
Pelican

Longsword Fighter

The Longsword Fighter is presumably the veil of protection launched from Human capital ships to defend against incoming hordes of Covanant fighters and capital ships. The Longsword has a crew of two, although does have a spacious cockpit with other stations open. These stations most likely consist of system monitors and whatnot.
Infantry
Master Chief

You are the Master Chief - all that remains of a classified military project to build a series of genetically enhanced super-soldiers. You are humanity's last and best hope against the Covenant - but you're woefully outmatched, and survival is not guaranteed.
Same unit as Kal-El requested here: http://forums.civfanatics.com/showthread.php?s=&threadid=41669
Marines

A rugged and diverse assortment of soldiers, the Marines on the Pillar of Autumn are fighting a losing battle against the Covenant's superior weaponry and numbers. Under the leadership of Captain Keyes they continue to wage a furious struggle against the Covenant, even as their numbers dwindle. They're the best of the best - but they're only human.