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6.Units Since not all units appear in the cilvilopedia, here are more data about most units. The only units that are not listed here are for special events, so you don´t have to worry about their combat values. The table below should be self explaining, but it case someone has difficulties, it uses the following abbreviations:
Two space visibility = See x2
Ignore zones of control = No ZOC
Can make amphibious assaults = Marines
Submarine advantages/disadvantages = Sub
Can attack air units (fighter) = See the "Role" field
Ship must stay near land (trireme) = Not used
Negates city walls (howitzer) = Ignores walls
Can carry air units (carrier) = See the "Role" field
Can make paradrops = See the "Role" field
Alpine (treats all squares as road) = all Road
x2 on defense versus horse (pikemen) = x2 Def against move 2+ units
Free support for fundamentalism (fanatics) = Not used
Destroyed after attacking (missiles) = Missile
x2 on defense versus air (AEGIS) = x2 Def against air
Unit can spot submarines = Locate subs
An "x" in the "Cost" field means that the unit canot be built.
To the "Domain":
Ground: normal Civ2 land units, the idea is that they can only move on normal ocean ground
(= civ2 land squares), but not in deep sea areas, because they are not equipped for that.
Sea: Civ2 ocean squares are here deep sea. The idea is that deep sea units act similar to modern nuclear subs today - they do only operate in deep sea regions and leave them only for special tasks, or when returning to a base. Therefore they do not enter "normal" ocean ground.
Air: Ideal to simulate units that can cross the entire undersea region in flat waters. The several "Heli" type units simulate units that need to return to a homebase often to refuel.

All Civs | Domain | Move | Rng | Att | Def | HP | FP | Cost | Hold | Role | Flags
Constructor | Ground | 1 |  | 0 | 1 | 2 | 1 | 5 |  | Settler |
Provider | Ground | 2 |  | 4 | 6 | 2 | 2 | 6 |  | Trade | no ZOC
SubForce | Domain | Move | Rng | Att | Def | HP | FP | Cost | Hold | Role | Flags
CargoDSV | Sea | 4 |  | 0 | 8 | 2 | 2 | 20 | 4 | Transport |
CyberAgent | Ground | 3 |  | 0 | 6 | 2 | 2 | 5 |  | Spy | no ZOC, see x2
Dreadnought | Sea | 5 |  | 16 | 10 | 5 | 5 | 100 |  | Attack | no ZOC, see x2, x2 Def against air, locate subs,
Recon Unit | Sea | 6 |  | 0 | 4 | 1 |  | x |  | Recon | see x2, locate subs, sub
SAR Team | Air | 5 | 1 | 5 | 5 | 2 | 2 | 5 |  | Rescue | no ZOC, locate subs, sub
SeaWolf | Sea | 6 |  | 10 | 6 | 2 | 3 | 30 |  | Attack | locate subs, sub
Signal Emitter | Air | 1 | 1 | 0 | 1 | 1 | 1 | x |  |  | self destructing
Special Forces | Ground | 2 |  | 10 | 4 | 3 | 4 | 5 |  | Paratrooper | no ZOC, see x2, ignore walls,
Stingray | Air | 6 | 1 | 8 | 6 | 2 | 2 | 7 |  | Fighter | no Zoc, locate subs, x2 Def against air
SubCarrier | Sea | 5 |  | 8 | 10 | 5 | 5 | 100 | 8 | Carrier | sub, x2 Def against air, see x2, locate subs,
SubCruiser | Sea | 5 |  | 14 | 10 | 5 | 5 | 80 |  | Attack | x2 Def against air, locate subs,
Subtrooper | Ground | 2 |  | 8 | 6 | 3 | 2 | 3 |  | Defense | x2 Def against move 2+ units
Typhoon | Air | 8 | 1 | 10 | 8 | 2 | 4 | x |  | Fighter | no ZOC, see x2, can attack air, x2 Def against air, locate subs
Workbee | Ground | 3 |  | 0 | 1 | 2 | 1 | 6 |  | Engineer | no ZOC
Company | Domain | Move | Rng | Att | Def | HP | FP | Cost | Hold | Role | Flags
Barracuda | Sea | 5 |  | 8 | 6 | 2 | 2 | 20 |  | Attack | see x2, locate subs
Corsair | Ground | 5 |  | 16 | 6 | 2 | 3 | 10 |  | Attack | no ZOC, see x2
Defender | Ground | 0 |  | 6 | 6 | 2 | 2 | 10 |  | Defense |
Devastator | Ground | 3 |  | 14 | 8 | 2 | 5 | 60 |  | Attack | no ZOC
Hammerhead | Air | 8 | 1 | 10 | 6 | 2 | 4 | 5 |  | Fighter | no ZOC, see x2. locate subs, x2 Def against air
Intruder | Ground | 8 |  | 6 | 6 | 2 | 3 | 5 |  | Heli | no ZOC, see x2
Marauder | Ground | 5 |  | 10 | 6 | 2 | 3 | 10 |  | Attack | no ZOC, see x2, ignores walls
Protector | Ground | 0 |  | 0 | 7 | 3 | 3 | 10 |  | Defense | see x2, locate subs
Raider | Ground | 5 |  | 8 | 4 | 2 | 2 | 4 |  | Heli | no Zoc, locate subs, ignores walls
Scout | Ground | 4 |  | 5 | 3 | 2 | 1 | 5 |  | Heli | no ZOC, see x2
SeaNomad | Ground | 6 |  | 8 | 2 | 2 | 3 | 5 |  | Heli |
Shockwave | Air | 5 | 1 | 99 | 50 | 1 | 1 | 16 |  | Attack | mass destruction
Subdroid | Ground | 0 |  | 0 | 6 | 2 | 2 | 6 |  | Defense | see x2
Subdroid II | Ground | 1 |  | 10 | 6 | 3 | 3 | 8 |  | Attack | see x2, Marines
SubFreighter | Sea | 5 |  | 0 | 6 | 2 | 2 | 14 | 4 | Transport |
SubRoc | Air | 5 |  | 10 | 1 | 1 | 3 | 10 |  | Attack | see x2, missile
SubTanker | Sea | 4 |  | 0 | 6 | 2 | 2 | 10 |  | Transport |
Terrorists | Ground | 1 |  | 6 | 4 | 2 | 2 | 5 |  | Partisan | no ZOC, all road
Torpedolauncher | Ground | 3 |  | 10 | 4 | 2 | 3 | 12 |  | Attack | ignores walls
Trooper | Ground | 2 |  | 8 | 4 | 2 | 2 | 5 |  | Defense | see x2
Vampire | Ground | 8 |  | 10 | 4 | 2 | 2 | 8 |  | Heli | no Zoc, see x2, locate subs
Others | Domain | Move | Rng | Att | Def | HP | FP | Cost | Hold | Role | Flags
Base Ruins | Ground | 0 |  | 0 | 1 | 1 | 1 | x |  |  |
Base Ruins | Ground | 0 |  | 0 | 2 | 1 | 1 | x |  |  |
ComCenter | Ground | 0 |  | 0 | 10 | 2 | 1 | x | Please note: I have not included the special flags for these units, since they cannot be built and cannot attack .
Depot | Air | 0 | 2 | 0 | 2 | 1 | 1 | x
Detector | Air | 0 | 2 | 0 | 6 | 2 | 1 | x
Firewall | Air | 0 | 2 | 0 | 10 | 2 | 1 | x
Gastank | Air | 0 | 2 | 0 | 4 | 1 | 1 | x
Gasmine | Air | 0 | 2 | 0 | 4 | 1 | 1 | x
Ruine | Ground | 0 |  | 0 | 10 | 2 | 2 | x |  |  |
Ruins | Ground | 0 |  | 0 | 4 | 2 | 2 | x |  |  |
Stealth Base | Ground | 0 |  | 0 | 10 | 2 | 2 | x |  |  |