Terrain
- This article describes terrain in land provinces.
For naval terrain, see naval terrain.
- See also: Weather
The terrain of land provinces can affect the movement and combat performance of units, and cause attrition. Harsh terrain tends to favor the defender.

Legend:
desert = "red background with ⛭"
hills = "cornsilk background with △"
mountain = "light gray background with ▲"
ocean = "blue background with ~"
lakes = "blue background with no symbol"
marsh = "olive background with ⚶"
forest = "spring green background with ♧"
jungle = "yellow green background with ♣"
plains = "orange background with no symbol"
urban = "dark gray background with ⚑"
]]
Types[edit | edit source]
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This is a community maintained wiki. If you spot a mistake then you are welcome to fix it. |
Each land province has a terrain type, which is shown when the province is selected.
- Combat width: Maximum amount of battalions that can fight in a province. "+Additional attacks" is how much combat width will be added for each extra direction of attack into the province.
- Movement cost: Increases the distance units have to travel by this factor.
- Attrition: When at war, land units moving from this terrain type suffer this amount of attrition.
- Attack: Adjuster to the attacker's soft/hard attack and breakthrough when the defender is in this terrain.
- Enemy air superiority: If the enemy has air superiority, their bonus is reduced by this amount.
- Sickness: Army leaders may become temporarily unwell when units are in this terrain.
- Supply flow penalty factor: Reduces the flow of hub supply into a province with this terrain.
- Truck attrition factor: Increases the rate of attrition for trucks used to motorize supply hubs in this terrain.
Paths[edit | edit source]
A path between two adjacent provinces is the straight line between their centers. It is traced on a pixel grid[1], making diagonal lines noticeably longer than north-south and east-west lines. The terrain along this path (along with its distance) determines its movement cost.
The path may consist of the source and target province's terrain in varying proportions or even different terrains altogether. For example the path between two coastal mountain provinces at a fjord might consist of 40% mountain and 60% ocean, resulting in +40% movement cost for this path instead of +100% in a pure mountain range.
The path also determines whether direction-dependent terrain features apply.
Terrain features[edit | edit source]
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This is a community maintained wiki. If you spot a mistake then you are welcome to fix it. |
Terrain features can apply adjusters and modifiers in addition to the base terrain. They stack multiplicatively with base terrain values. They only affect the attacker because some of them depend on the path and the defender might fight against attackers from different directions. The attack adjuster applies to the attacker's soft/hard attack and the defense adjuster to their breakthrough.
- Small river: -30% to attack/defense and -25% to movement.
- Large river: -60% to attack/defense and -50% to movement.
- Amphibious landing: -70% to attack/defense.
- Fort (land and naval): -15% to attack/defense per level.
The river adjuster applies when a path intersects a river. If a river modifier is applied in combat, this also allows other battle tactics. The amphibious landing penalty applies when a unit attacks a land province from a sea province. The movement cost of an amphibious landing is a fixed length.
The fort adjuster applies to land forts in all directions. With each flanking attack the bonus gets diminished. Naval forts reduce the attack when attacking in an amphibious landing, and when attacking across a strait.
Unit-specific adjusters[edit | edit source]
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This is a community maintained wiki. If you spot a mistake then you are welcome to fix it. |
Units may have specific adjusters in addition to the base terrain and terrain feature adjusters. The net adjuster for a division is the average of its combat battalions, plus the sum of the adjusters of its support battalions. Among the regular terrain adjusters, the attack value modifies the attacker's attack and breakthrough, and the defense value modifies the defender's attack and defense.
For terrain feature adjusters (except amphibious and forts), the attack value modifies the attacker's attack, and the defense value modifies the attacker's breakthrough. The amphibious and fort adjusters ignore their defense value[2] and use the attack value for both attack and breakthrough. The unit's adjuster stacks additively with the terrain and terrain feature adjuster respectively. Divisions lacking manpower have proportionately smaller bonuses and penalties.
Units move at the slowest speed of a combat battalion (adjusted for terrain). Recon units can increase the max speed of units for some terrain.
Note that positive amphibious and fort attack adjusters cannot exceed the base penalty, while river adjusters can.
Attack[edit | edit source]
Unit | Type | ![]() Forest |
![]() Hills |
![]() Mountain |
![]() Plains |
![]() Urban |
![]() Jungle |
![]() Marsh |
![]() Desert |
![]() River |
![]() Fort | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Amphibious Armor | Combat | −20% | -10% | -10% | -40% | -30% | +30% | +40% | +60% | |||
Amphibious Mechanized | Combat | -20% | -5% | -20% | -30% | +20% | +30% | +50% | ||||
Anti-Air | Combat | −10% | −20% | −20% | −20% | −40% | ||||||
Anti-Tank | Combat | −20% | −25% | −20% | −20% | −40% | +10% | |||||
Armored Car | Combat | −20% | -10% | -30% | −30% | −10% | −20% | −40% | ||||
Artillery | Combat | −20% |
−25% |
−20% | −20% | −40% | +10% | |||||
Bicycle Battalion | Combat | |||||||||||
Camel | Combat | −5% | −5% | −10% | −5% | −10% | +5% | −40% | ||||
Cavalry | Combat |
−5% |
−5% | −10% | −5% | −10% | −40% | |||||
Engineer Company | Support | (+10%[3]) | (+10%[4]) | +25% | +10% (+20%[5]) | |||||||
Field Hospital | Support | |||||||||||
Heavy SP Anti-Air | Combat | −40% | −20% | −30% |
−50% |
−60% | −40% | −40% | −80% | |||
Heavy SP Artillery | Combat | −40% | −20% | −30% | −50% | −60% | −40% | −40% | −80% | |||
Heavy Tank | Combat | −40% | −20% |
−30% |
−50% | −60% |
−40% |
−40% | −80% |
+10% | ||
Heavy Tank Destroyer | Combat | −40% | −20% | −30% | −50% | −60% | −40% | −40% | −80% | +5% | ||
Infantry | Combat | |||||||||||
Light SP Anti-Air | Combat | −20% | −10% | −40% | −30% | −10% | −20% | −60% | ||||
Light SP Artillery | Combat | −20% | −10% | −40% | −30% | −10% | −20% | −60% | ||||
Light Tank | Combat |
−20% |
−10% | −40% | −30% | −10% | −20% | −40% | ||||
Light Tank Destroyer | Combat | −20% |
−10% |
−40% | −30% | −10% |
−20% |
−60% | ||||
Logistics Company | Support | |||||||||||
Maintenance Company | Support | |||||||||||
Marines | Combat | +30% | +30% | +50% | ||||||||
Mechanized Infantry | Combat | −20% | −5% |
−20% |
−30% | −10% | −20% | −40% | ||||
Medium SP Anti-Air | Combat | −30% | −10% | −20% | −40% | −40% | −10% | −20% | −70% | |||
Medium SP Artillery | Combat | −30% | −10% | −20% | −40% | −40% | −10% | −20% | −70% | |||
Medium Tank | Combat | −30% | −10% | −20% | −40% | −40% | −10% | −20% | −80% | |||
Medium Tank Destroyer | Combat | −30% |
−10% |
−20% |
−40% |
−40% | −10% | −20% | −70% | |||
Military Police | Support | |||||||||||
Modern SP Anti-Air | Combat | −30% | −10% | −20% | −40% | −40% | −10% | −20% | −70% | |||
Modern SP Artillery | Combat | −30% | −10% | −20% | −40% | −40% | −10% | −20% | −70% | |||
Modern Tank | Combat | −30% | −10% | −20% | −40% |
−40% |
−10% | −20% | −70% | |||
Modern Tank Destroyer | Combat | −30% | −10% | −20% | −40% | −40% |
−10% |
−20% | −70% | |||
Motorized Anti-Air | Combat | −10% | −20% | −20% | −20% | −40% | ||||||
Motorized Anti-Tank | Combat | -20% | -25% |
-20% |
-20% | -40% | +10% | |||||
Motorized Artillery | Combat | −20% |
−25% |
−20% | −20% | −40% | +10% | |||||
Motorized Infantry | Combat | −10% | −5% |
−10% |
−20% | −10% | −10% | −20% | ||||
Motorized Rocket Artillery | Combat | −20% | −25% | −20% | −20% | −40% | +10% | |||||
Motorized Rocket(Katyusha} | Combat | −10% |
−25% |
−20% | −20% | −40% | +10% | |||||
Mountaineers | Combat | +20% | +35% | |||||||||
Paratroopers | Combat | |||||||||||
Recon Company | Support | |||||||||||
Rocket Artillery | Combat | −20% | −25% | −20% | −20% | −40% | +10% | |||||
Signal Company | Support | |||||||||||
Super Heavy SP Anti-Air | Combat | −50% | −30% | −40% | −60% | −70% | −50% | −50% | −100% | |||
Super Heavy SP Artillery | Combat | −50% | −30% | −40% | −60% | −70% | −50% | −50% | −100% | |||
Super Heavy Tank Destroyer | Combat | −50% | −30% | −40% | −60% | −70% | −50% | −50% | −100% | +30% | ||
Super-Heavy Tank | Combat | −50% | −30% | −40% |
−60% |
−70% | −50% | −50% | −100% | +50% | ||
Support Anti-Air | Support | |||||||||||
Support Anti-Tank | Support | |||||||||||
Support Artillery | Support | |||||||||||
Support Rocket Artillery | Support | |||||||||||
Light Flame Tank Company | Support | +5% | +5% | +5% | +10% | +10% | +5% | +10% | +10% | +10% | ||
Medium Flame Tank Company | Support | +10% | +5% | +5% | +15% | +15% | +5% | +10% | +10% | +20% | ||
Heavy Flame Tank Company | Support | +10% | +5% | +10% | +10% | +5% | +5% | +5% | +25% |
Defense[edit | edit source]
Unit | Type | ![]() Forest |
![]() Hills |
![]() Mountain |
![]() Plains |
![]() Urban |
![]() Jungle |
![]() Marsh |
![]() Desert |
![]() River |
![]() Amphibious |
![]() Fort |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Amphibious Mechanized | Combat | -5% | ||||||||||
Amphibious Tank | Combat | -10% | ||||||||||
Anti-Air | Combat | |||||||||||
Anti-Tank | Combat | |||||||||||
Armored Car | Combat | |||||||||||
Artillery | Combat | |||||||||||
Bicycle Battalion | Combat | |||||||||||
Camel | Combat | +5% | ||||||||||
Cavalry | Combat | |||||||||||
Engineer Company | Support | +25% |
+10% |
(+10%[3]) | +25% | +25% | +25% (+35%[4]) | +25% (+35%[5]) | ||||
Field Hospital | Support | |||||||||||
Heavy SP Anti-Air | Combat | −20% | ||||||||||
Heavy SP Artillery | Combat | −20% | ||||||||||
Heavy Tank | Combat | −20% | ||||||||||
Heavy Tank Destroyer | Combat | −20% | ||||||||||
Infantry | Combat | |||||||||||
Light SP Anti-Air | Combat | −10% | ||||||||||
Light SP Artillery | Combat | −10% | ||||||||||
Light Tank | Combat | −10% | ||||||||||
Light Tank Destroyer | Combat | −10% | ||||||||||
Logistics Company | Support | |||||||||||
Maintenance Company | Support | |||||||||||
Marines | Combat | |||||||||||
Mechanized Infantry | Combat | −5% | ||||||||||
Medium SP Anti-Air | Combat | −10% | ||||||||||
Medium SP Artillery | Combat | −10% | ||||||||||
Medium Tank | Combat | −10% | ||||||||||
Medium Tank Destroyer | Combat |
−10% |
||||||||||
Military Police | Support | |||||||||||
Modern SP Anti-Air | Combat | −10% | ||||||||||
Modern SP Artillery | Combat | −10% | ||||||||||
Modern Tank | Combat | −10% | ||||||||||
Modern Tank Destroyer | Combat | −10% | ||||||||||
Motorized Anti-Air | Combat | |||||||||||
Motorized Anti-Tank | Combat | |||||||||||
Motorized Artillery | Combat | |||||||||||
Motorized Infantry | Combat | -5% | ||||||||||
Motorized Rocket Artillery | Combat | |||||||||||
Motorized Rocket (Katyusha) | Combat | |||||||||||
Mountaineers | Combat | +5% | +10% | |||||||||
Paratroopers | Combat | |||||||||||
Recon Company | Support | |||||||||||
Rocket Artillery | Combat | |||||||||||
Signal Company | Support | |||||||||||
Super Heavy SP Anti-Air | Combat |
−20% |
||||||||||
Super Heavy SP Artillery | Combat | −20% | ||||||||||
Super Heavy Tank Destroyer | Combat | −20% | ||||||||||
Super-Heavy Tank | Combat |
−20% |
||||||||||
Support Anti-Air | Support | |||||||||||
Support Anti-Tank | Support | |||||||||||
Support Artillery | Support | |||||||||||
Support Rocket Artillery | Support |
Movement[edit | edit source]
Politics | Ideology • Faction • National focus • Ideas • Government • Puppet • Diplomacy • World tension • Civil war • Occupation • Intelligence agency |
Production | Trade • Production • Construction • Equipment • Fuel |
Research and technology | Research • Infantry technology • Support Companies technology • Armor technology • Artillery technology • Land doctrine • Naval technology • Naval doctrine • Air technology • Air doctrine • Engineering technology • Industry technology |
Military and warfare | Warfare • Peace conference • Land units • Land warfare • Division designer • Tank design • Army planner • Command group • Commander • Battle plan • Combat tactics • Ship • Naval warfare • Aircraft • Air warfare • Experience • Officer corps • Attrition and accidents • Logistics • Manpower • Nuclear bomb |
Map | Map • Province • Terrain • Weather • State |
Events and Decisions | Events • Decisions |
- ↑ wp:Bresenham's_line_algorithm
- ↑ This means Engineer Company's fort defense bonus of +25% does not work
- ↑ 3.0 3.1 requires Engineer Company IV
- ↑ 4.0 4.1 requires Engineer Company III
- ↑ 5.0 5.1 requires Engineer Company II