Civ4UnitInfos

The Civ4UnitInfos XML file controls data related to individual units: for example, a unit's strength value or production cost. There are also more detailed options, affecting things like transport capabilities, prerequisites, and other complex features.

All tags must be opened and closed; the first is the 'open', the second the 'closed' tag. If nothing goes inside a 'list tag', then it should just be the opening tag with a "/" before the closing bracket. The following tables contain all available tags, as well as their purpose and accepted values.

This page is missing information. Do not remove this notice until it is complete.

Tags

Headers

These tags typically bracket other tags, sometimes the entire file, and are generally used to specify more than one piece of data.

Tag Name	Description
Capture	Either NONE, or the unit which the unit turns into when captured.
Class	The class as defined in CIV4UnitClassInfos.xml. Class is the thing that holds, say, a Swordsman and a Praetorian together; each civilization can only have one of each class.
Combat	The combat type, out of UNITCOMBAT_MELEE, UNITCOMBAT_ARCHER, UNITCOMBAT_MOUNTED, UNITCOMBAT_GUN, UNITCOMBAT_SIEGE, UNITCOMBAT_NAVAL, UNITCOMBAT_AIR and UNITCOMBAT_HELICOPTER of the unit - used to determine bonuses in combat & defense.
Domain	DOMAIN_ - then AIR, SEA or LAND.
DefaultUnitAI	The default way in which the AI uses the unit.
Invisible	Either NONE (either meaning not invisible or completely invisible, see below) or INVISIBLE_STEALTH or INVISIBLE_SUBMARINE.
SeeInvisible	Either NONE or a category of invisibility above. Means that the unit can see all units with this type of invisibility.
Special	Should be NONE unless it comes under a heading in CIV4SpecialUnitInfos.xml; in which case write that.
Type	The name of the unit; which must be unique.
UnitInfo	Each different unit's data is enclosed in a seperate tag like this.
UnitInfos	This begins and ends the file. Everything must go in between these two, or it will not work.
UniqueNames	Only ever a closing tag. Just put it in, OK?

Prerequisites

These tags must be included when writing new entries, or the game will crash or otherwise malfunction.

Tag Name	Description
AdvancedStartCost	The cost in points of the unit on Advanced Start.
AdvancedStartCostIncrease	Affects the cost in points of the unit on Advanced Start.
BonusType	The resource needed to build this unit.
Flavors	The 'flavours' of the unit - these relate to leader behavior in the AI.
HolyCity	If not NONE, then it is the Holy City needed to build the unit.
HurryCostModifier	Impacts the Gold Hurry cost of the unit.
MinAreaSize	Minimal number of water squares needed nearby to build sea vessels (20 for all sea units except Work Boats).
Moves	The number of movement points that the unit has.
PrereqBonuses	Used as a list tag to enclose BonusType tags.
PrereqBuilding	Either NONE, or the building needed in a city to build this unit.
PrereqCorporation	Either NONE, or the corporation needed in a city to build this unit.
PrereqReligion	Either NONE, or the religion needed in a city to build this unit.
PrereqTech	Either NONE, or the technology that you need to build this unit.
ProductionTraits	The leader traits which affect production of this unit, along with the value.
ReligionType	For units, always NONE.
StateReligion	If not NONE, the State Religion needed to build this unit.
TechTypes	Used as a list tag to enclose PrereqTech tags.

Text

Tag Name	Description
Advisor	Almost always ADVISOR_MILITARY; the rationale that the game gives for reccomending the unit.
Civilopedia	As above for the Civiliopedia entry.
Description	Either text or a key from the text files. The name displayed for the unit.
Strategy	As above for the Sid's Tips, also displayed above the Civilopedia entry.

Integers

All of these tags have a numerical value. Though it sometimes can be negative, it usually is not.

Tag Name	Description
iAirCombat	The unit's base strength for Air Units.
iAirCombatLimit	Always 100 - purpose unclear.
iAirRange	Only for Air Units; the range at which it can operate.
iAirUnitCap	Should be 0.
iAIWeight	The preference given by the AI to this unit, generally for Unique Units.
iAnimalCombat	The bonus that the unit gets against Animals, in attack or defence.
iAsset	Affects the AI's behaviour towards it in some way.
iBaseDiscover	The rate at which the unit discovers new tiles.
iBaseHurry	Amount of production in a city the unit can hurry.
iBaseTrade	The basic amount of money that the unit makes from a Trade Mission.
iBombardRate	The rate at which a unit Bombards a city.
iBombRate	The damage that a unit does when carrying out an Air Bomb mission.
iCargo	The number of units that the unit can carry.
iChanceFirstStrikes	The number of First Strike Chances that the unit has.
iCityAttack	The bonus that the unit gets when attacking cities.
iCityDefense	The bonus that the unit gets when defending cities.
iCollateralDamage	The amount of Collateral Damage that the unit does.
iCollateralDamageLimit	The maximum amount of collateral damage that the unit can do; so the minimum Strength that the target can be at.
iCollateralDamageMaxUnits	The greatest number of enemy unit that the unit can inflict damage on.
iConscription	The number of this unit that can be drafted.
iCombat	The unit's base strength.
iCombatLimit	Always 100 - purpose unclear.
iCost	The cost in hammers of the unit.
iCultureGarrison	The suppression value of a unit while garrisoned in a rebelling city.
iDiscoverMultiplier	Affects the rate at which the unit discovers new tiles.
iDropRange	The range at which the unit can 'jump' from a friendly city.
iEspionagePoints	Used for Spies - not sure of the exact effect.
iEvasionProbability	For air and parachute units; the odds of evading interception.
iExtraCost	Affects the cost of the unit.
iFirstStrikes	The number of automatic First Strikes that the unit has.
iGreatWorkCulture	The amount of culture that the unit generates with a Great Work.
iHillsAttack	The bonus that the unit gets when attacking hills.
iHillsDefense	The bonus that the unit gets when defending hills.
iHotKeyPriority	Not sure what this does.
iHurryMultiplier	Multiplier of the above.
iInterceptionProbability	The odds an Air Unit has of intercepting an enemy trying to carry out a mission in the area.
iLeaderExperience	The amount of experience which a certain leader gives this unit.
iNukeRange	The range at which the 'nuke' can be launched - missiles only.
iPower	Affects the amount that the AI factors it into the equation when determining your military power.
iTradeMultiplier	Affects the amount of money that the unit makes from a Trade Mission.
iWithdrawalProb	The amount of Withdrawal Chance that the unit has.
iWorkRate	The rate at which the unit improves tiles.
iXPValueAttack	The value, in Experience Points, that this unit is worth on the attack.
iXPValueDefense	The value, in Experience Points, that this unit is worth on the defence.

Boolean

All of these can either be 1 (on, or true) or 0 (off, or false). Be careful, as you can wind up with a double-negative, which the game will interpret as "True".

Tag Name	Description
bAltDown	If 1, the hotkey for this unit must be used with Alt.
bAlwaysHostile	Can attack enemy units without declaring war, and can be attacked without triggering a war. All nations treat it as an enemy unit.
bAnimal	The unit is an animal; the Barbarian State controls it, it can spring from anywhere and it cannot enter cultural borders.
bCanMoveImpassible	If the unit is a Submarine, it can go under Ice.
bCanMoveAllTerrain	Can move across all terrain.
bCounterSpy	Should only be 1 in Vanilla or Warlords; can Perform Counterespionage.
bCtrlDown	If 1, the hotkey for this unit must be used with Ctrl.
bDestroy	Should only be 1 in Vanilla or Warlords; can Destroy Improvement.
bFirstStrikeImmune	Is immune to all First Strikes.
bFlatMovementCost	Pays a flat movement cost to enter all terrain.
bFood	A city does not generate food while building this unit.
bFound	Can found a city.
bGoldenAge	Counts as a Great Person to start a Golden Age.
bHiddenNationality	Bears no marking of nationality.
bIgnoreBuildingDefense	Ignores defensive bonuses from enemy buildings, like Walls and Castles.
bIgnoreTerrainCost	Ignores movement penalties from terrain.
bInvestigate	Should only be 1 in Vanilla or Warlords; can Investigate City.
bInvisible	Is invisible to all units.
bMechanized	Not sure what this does - used for all land units in a vehicle.
bMilitaryHappiness	Counts as a Military Unit in the eyes of the rabble.
bMilitaryProduction	Counts as a military unit for production bonuses/penalties.
bMilitarySupport	Costs money to maintain as part of your military, affected by Pacifism and the like.
bNoBadGoodies	When this unit is entering a Tribal Village, the villagers will never be hostile.
bNoCapture	This unit cannot capture cities.
bNoDefensiveBonus	Does not receive defensive bonuses.
bNoRevealMap	If 1, the unit does not reveal any tiles except the one it is currently standing on.
bNukeInnume	Takes no damage from enemy nukes.
bOnlyDefensive	This unit cannot attack other units.
bPillage	Can pillage enemy tiles.
bQuickCombat	ALways 0; not sure what it actually does.
bRivalTerritory	Can explore rival territory.
bPrereqBonuses	Needs the mentioned resources to be built (can be NONE).
bPrereqReligion	Needs the mentioned religion to be built (can be NONE).
bSabotage	Should only be 1 in Vanilla or Warlords; can Sabotage Production.
bShiftDown	If 1, the hotkey for this unit must be used with Shift.
bSpy	Is a spy.
bStealPlans	Should only be 1 in Vanilla or Warlords; can Steal Plans.
bSuicide	Kills itself upon attacking, like a Kamikaze in the Defence mod.

Tag Name	Description
Builds	For all the things that the unit can build on tiles; but not wonders that it can build in cities.
Buildings	The buildings which the unit can construct in a friendly city.
CorporationSpreads	Put the Corporations which the unit can spread here, if it is a CEO.
FlankingStrikes	All unit classes against which the unit gets a Flank Attack.
ForceBuildings	The buildings the unit can construct in any city.
GreatPeoples	If the unit can settle in a city, put the type of specialist it becomes here.
NotUnitAIs	As UnitAIs, but for the tasks which the AI will never consider the unit for.
ReligionSpreads	Put the religions which the unit can spread here, if it is a missionary.
UnitClassDefenders	Not sure what this one does.
UnitClassTargets	Not sure what this one does.
UnitClassUpgrades	The Classes of unit to which this unit upgrades.
UnitCombatDefenders	Does whatever UnitClassDefenders does, but is directed at a particular combat.
UnitCombatTargets	Does whatever UnitClassTargets does, but is directed at a particular combat.
UnitAIs	Inside here go the methods which the AI uses to command this unit. It dictates the roles which the unit is good for.

Miscellaneous

Tag Name	Description
BonusProductionModifiers	Resources that make the unit produce faster.
DomainCargo	The Domains (AIR, SEA, or LAND) that the unit can carry.
DomainMods	The bonuses/penalties that the unit gets against Air, Sea or Land units.
FeatureAttacks	Attack bonuses that the unit gets in different features.
FeatureDefenses	Defence bonuses that the unit gets in different features.
FeatureImpassables	Used to specify terrain features (Jungle, Forest, etc.) that the unit will never be able to enter.
FeatureNatives	This affects the feature types animals spawn in.
FreePromotions	The promotions that this unit starts with.
HotKey	Never used in the original game - it can be used to define a hotkey for the unit.
LeaderPromotions	Promotions which a certain leader gives this unit.
SpecialCargo	Any types of Special Unit that the unit can carry.
TerrainAttacks	Attack bonuses that the unit gets in different terrain.
TerrainDefenses	Defence bonuses that the unit gets in different terrain.
TerrainImpassables	Used to specify terrain types (Ocean, Desert, etc.) that the unit will never be able to enter.
TerrainNatives	This affects the terrain types animals spawn in.
TerrainPassableTechs	With these technologies, the unit can enter the terrain defined in TerrainImpassables.
UnitClassAttackMods	The bonuses/penalties that the unit gets against specific unit classes in attack.
UnitClassDefenseMods	The bonuses/penalties that the unit gets against specific unit classes in defence.
UnitCombatCollateralImmunes	The unit combats that this unit does not recieve collateral damage from.
UnitCombatMods	The bonuses/penalties that the unit gets against different combats.

Art

These tags are directly related to the rendering of art for the entry.

Tag Name	Description
EarlyArtDefineTag	From CIV4ArtDefinesUnit - what the unit looks like in-game.
FormationType	The formation that the unit adopts.
fMaxSpeed	Not sure what this does.
fPadTime	Not sure what this does.
iGroupSize	The number of models in the unit.
iMeleeWaveSize	The number of models that engage in melee combat.
iRangedWaveSize	The number of models that engage in ranged combat at once.
UnitMeshGroups	Holds the unit's art data.

Example

<UnitInfo>
  <Class>UNITCLASS_LION</Class>
  <Type>UNIT_LION</Type>
  <UniqueNames/>
  <Special>NONE</Special>
  <Capture>NONE</Capture>
  <Combat>NONE</Combat>
  <Domain>DOMAIN_LAND</Domain>
  <DefaultUnitAI>UNITAI_ANIMAL</DefaultUnitAI>
  <Invisible>NONE</Invisible>
  <SeeInvisible>NONE</SeeInvisible>
  <Description>TXT_KEY_UNIT_LION</Description>
  <Civilopedia>TXT_KEY_CONCEPT_ANIMALS_PEDIA</Civilopedia>
  <Strategy>TXT_KEY_UNIT_ANIMAL_STRATEGY</Strategy>
  <Advisor>NONE</Advisor>
  <bAnimal>1</bAnimal>
  <bFood>0</bFood>
  <bNoBadGoodies>0</bNoBadGoodies>
  <bOnlyDefensive>0</bOnlyDefensive>
  <bNoCapture>0</bNoCapture>
  <bQuickCombat>0</bQuickCombat>
  <bRivalTerritory>0</bRivalTerritory>
  <bMilitaryHappiness>0</bMilitaryHappiness>
  <bMilitarySupport>0</bMilitarySupport>
  <bMilitaryProduction>0</bMilitaryProduction>
  <bPillage>0</bPillage>
  <bSpy>0</bSpy>
  <bSabotage>0</bSabotage>
  <bDestroy>0</bDestroy>
  <bStealPlans>0</bStealPlans>
  <bInvestigate>0</bInvestigate>
  <bCounterSpy>0</bCounterSpy>
  <bFound>0</bFound>
  <bGoldenAge>0</bGoldenAge>
  <bInvisible>0</bInvisible>
  <bFirstStrikeImmune>0</bFirstStrikeImmune>
  <bNoDefensiveBonus>1</bNoDefensiveBonus>
  <bIgnoreBuildingDefense>0</bIgnoreBuildingDefense>
  <bCanMoveImpassable>0</bCanMoveImpassable>
  <bCanMoveAllTerrain>0</bCanMoveAllTerrain>
  <bFlatMovementCost>0</bFlatMovementCost>
  <bIgnoreTerrainCost>0</bIgnoreTerrainCost>
  <bNukeImmune>0</bNukeImmune>
  <bPrereqBonuses>0</bPrereqBonuses>
  <bPrereqReligion>0</bPrereqReligion>
  <bMechanized>0</bMechanized>
  <bSuicide>0</bSuicide>
  <bHiddenNationality>0</bHiddenNationality>
  <bAlwaysHostile>0</bAlwaysHostile>
  <UnitClassUpgrades/>
  <UnitClassTargets/>
  <UnitCombatTargets/>
  <UnitClassDefenders/>
  <UnitCombatDefenders/>
  <FlankingStrikes/>
  <UnitAIs>
     <UnitAI>
        <UnitAIType>UNITAI_ANIMAL</UnitAIType>
        <bUnitAI>1</bUnitAI>
     </UnitAI>
  </UnitAIs>
  <NotUnitAIs/>
  <Builds/>
  <ReligionSpreads/>
  <CorporationSpreads/>
  <GreatPeoples/>
  <Buildings/>
  <ForceBuildings/>
  <HolyCity>NONE</HolyCity>
  <ReligionType>NONE</ReligionType>
  <StateReligion>NONE</StateReligion>
  <PrereqReligion>NONE</PrereqReligion>
  <PrereqCorporation>NONE</PrereqCorporation>
  <PrereqBuilding>NONE</PrereqBuilding>
  <PrereqTech>NONE</PrereqTech>
  <TechTypes/>
  <BonusType>NONE</BonusType>
  <PrereqBonuses/>
  <ProductionTraits/>
  <Flavors/>
  <iAIWeight>0</iAIWeight>
  <iCost>-1</iCost>
  <iHurryCostModifier>0</iHurryCostModifier>
  <iAdvancedStartCost>-1</iAdvancedStartCost>
  <iAdvancedStartCostIncrease>0</iAdvancedStartCostIncrease>
  <iMinAreaSize>-1</iMinAreaSize>
  <iMoves>1</iMoves>
  <bNoRevealMap>0</bNoRevealMap>
  <iAirRange>0</iAirRange>
  <iAirUnitCap>0</iAirUnitCap>
  <iDropRange>0</iDropRange>
  <iNukeRange>-1</iNukeRange>
  <iWorkRate>0</iWorkRate>
  <iBaseDiscover>0</iBaseDiscover>
  <iDiscoverMultiplier>0</iDiscoverMultiplier>
  <iBaseHurry>0</iBaseHurry>
  <iHurryMultiplier>0</iHurryMultiplier>
  <iBaseTrade>0</iBaseTrade>
  <iTradeMultiplier>0</iTradeMultiplier>
  <iGreatWorkCulture>0</iGreatWorkCulture>
  <iEspionagePoints>0</iEspionagePoints>
  <TerrainImpassables/>
  <FeatureImpassables/>
  <TerrainPassableTechs/>
  <FeaturePassableTechs/>
  <iCombat>2</iCombat>
  <iCombatLimit>100</iCombatLimit>
  <iAirCombat>0</iAirCombat>
  <iAirCombatLimit>0</iAirCombatLimit>
  <iXPValueAttack>4</iXPValueAttack>
  <iXPValueDefense>2</iXPValueDefense>
  <iFirstStrikes>0</iFirstStrikes>
  <iChanceFirstStrikes>0</iChanceFirstStrikes>
  <iInterceptionProbability>0</iInterceptionProbability>
  <iEvasionProbability>0</iEvasionProbability>
  <iWithdrawalProb>0</iWithdrawalProb>
  <iCollateralDamage>0</iCollateralDamage>
  <iCollateralDamageLimit>0</iCollateralDamageLimit>
  <iCollateralDamageMaxUnits>0</iCollateralDamageMaxUnits>
  <iCityAttack>0</iCityAttack>
  <iCityDefense>0</iCityDefense>
  <iAnimalCombat>0</iAnimalCombat>
  <iHillsAttack>0</iHillsAttack>
  <iHillsDefense>0</iHillsDefense>
  <TerrainNatives>
     <TerrainNative>
        <TerrainType>TERRAIN_GRASS</TerrainType>
        <bTerrainNative>1</bTerrainNative>
     </TerrainNative>
     <TerrainNative>
        <TerrainType>TERRAIN_PLAINS</TerrainType>
        <bTerrainNative>1</bTerrainNative>
     </TerrainNative>
     <TerrainNative>
        <TerrainType>TERRAIN_DESERT</TerrainType>
        <bTerrainNative>1</bTerrainNative>
     </TerrainNative>
  </TerrainNatives>
  <FeatureNatives/>
  <TerrainAttacks/>
  <TerrainDefenses/>
  <FeatureAttacks/>
  <FeatureDefenses/>
  <UnitClassAttackMods/>
  <UnitClassDefenseMods/>
  <UnitCombatMods/>
  <UnitCombatCollateralImmunes/>
  <DomainMods/>
  <BonusProductionModifiers/>
  <iBombRate>0</iBombRate>
  <iBombardRate>0</iBombardRate>
  <SpecialCargo>NONE</SpecialCargo>
  <DomainCargo>NONE</DomainCargo>
  <iCargo>0</iCargo>
  <iConscription>0</iConscription>
  <iCultureGarrison>0</iCultureGarrison>
  <iExtraCost>0</iExtraCost>
  <iAsset>1</iAsset>
  <iPower>1</iPower>
  <UnitMeshGroups>
     <iGroupSize>3</iGroupSize>
     <fMaxSpeed>1.75</fMaxSpeed>
     <fPadTime>1</fPadTime>
     <iMeleeWaveSize>3</iMeleeWaveSize>
     <iRangedWaveSize>0</iRangedWaveSize>
     <UnitMeshGroup>
        <iRequired>3</iRequired>
        <EarlyArtDefineTag>ART_DEF_UNIT_LION</EarlyArtDefineTag>
     </UnitMeshGroup>
  </UnitMeshGroups>
  <FormationType>FORMATION_TYPE_ANIMAL</FormationType>
  <HotKey/>
  <bAltDown>0</bAltDown>
  <bShiftDown>0</bShiftDown>
  <bCtrlDown>0</bCtrlDown>
  <iHotKeyPriority>0</iHotKeyPriority>
  <FreePromotions/>
  <LeaderPromotion>NONE</LeaderPromotion>
  <iLeaderExperience>0</iLeaderExperience>
</UnitInfo>