From Hearts of Iron 4 Wiki
Jump to navigation Jump to search
First official public screenshot of HoI4's map & interface, from the 7th February 'Our Vision' dev diary

The map is where most tactical and strategic decisions happen. It also provides information related to these purposes, such as, weather, air combat, land combat, naval combat, and buildings.

Map divisions[edit | edit source]

The Map can be divided into three subdivisions:

Map modes[edit | edit source]

The map mode icons.

Using different map modes, you can alter the information presented on the map. These map modes can be activated by either clicking on the appropriate button (icon) located in the lower right corner of the main screen or by pressing the associated hotkey. Additional map modes can be revealed by clicking the Mapmodes open all button.png arrow button.

Additional map modes.

Default map mode[edit | edit source]

Default map mode button
The Default map mode without the day/night loop.

Shows sovereign nations and armies.

The default map mode is a combination of the political map mode and terrain map mode from previous games. It shows the name of all the nations, with their political color. Zoomed out, mainly the nation's color is seen, however, when zooming in, the terrain becomes more and more visible, integrating both map modes into one. Air fields, naval bases, capitals, and almost any other object on the map can be seen in this mode, represented by different symbols:

  • Naval bases are anchors Naval base icon.
  • Airfields are a top down picture of an airplane.
  • Capitals are a star, which can be green if it is the nation's capital, gray if they are any other nation's capital, or red if they are the capital of any of the nation's enemies.
  • Victory points are denoted by a small dot, which have a name when zoomed in, and particularly high value victory points are denoted by a slightly larger dot. They follow the color scheme of capitals.
  • Units can be seen as counters or sprites on the map.
  • Battles can be seen as pointers that are green if the nation is winning the battle, yellow if the battle is favoring neither side, or red if the nation is losing the battle, and it shows a number that summarizes how much the battle favors one side or the other.
  • Naval combat can be seen along with navies and their missions.
  • Aircraft can be seen flying where aircraft are in operation.
  • Forts and any other state- or province-wide constructions are also visible.
  • Demilitarized zones will be a red outline around any demilitarized area. The only time they are used is at the beginning of the game in the Rhineland, Danzig, and the Turkish Straits. An exception is the option to create demilitarized zones (DMZ) during peace conferences (requires By Blood Alone By Blood Alone) .

Strategic navy map mode[edit | edit source]

The Strategic Navy map mode.
Strategic Navy map mode button

Shows strategic regions relevant to naval activity, with information on naval supremacy and naval tasks.

The naval map mode consists of the world's strategic regions, with a color scheme similar to the diplomacy for states on land under it. Convoy routes are also shown here with the following color scheme:

  • Blue trade routes are resource transfers. These are imports, exports or resource transfers from owned oversea resources.
  • White trade routes are supply transfers to oversea units.
  • Green trade routes are lend lease routes.

Trade routes require convoys to operate.

Strategic regions that have sea provinces will be highlighted with green if they are under allied naval superiority. Provinces that are striped red are out of the fleets' operational range.

Straits[edit | edit source]

Strait canal

Canals or any type of controlled strait are shown on this map mode, and by hovering over them it is possible to see the access permissions your country has as well as the land provinces controlling the strait (blue outline). Straits are also shown on the Supply Map Mode and the Resource Map mode.

The following, are the names and province control points of the straits/canals on map and their respective permissions granted to nations (depending on the relations with the strait controllers).

Name Province Control Unit Permissions Contested? Enemy Friend Neutral
Suez Canal Cairo, Sinai Armies No No Yes Yes
Gibraltar Strait Gibraltar, Spanish Africa Armies No No Yes Yes
Navies No No
Submarines Yes Yes
Trade No No
Bosphorus Strait Istanbul Armies No No Yes No
Navies No
Submarines No
Trade Yes
The Dardanelles Edirne, Bursa Armies No No Yes No
Navies No
Submarines No
Trade Yes
Strait of Hormuz Fars, Abu Dhabi Armies No No Yes Yes
The Danish Belts Sjaelland, Jutland Armies No No Yes Yes
Navies No
Submarines Yes
Trade No
Kiel Canal Schleswig-Holstein Armies No No Yes No
Navies No
Submarines No
Trade Yes
The Panama Canal Panama Canal (US occupied), Panama Armies No No Yes No
Navies No
Submarines No
Trade Yes
Otranto Strait Puglia, Vlorë Armies Yes No Yes Yes
Navies Yes No
Submarines Yes Yes
Trade Yes No

Strategic air map mode[edit | edit source]

The Strategic Air map mode.
Strategic Air map mode button

Shows strategic regions with information on aerial supremacy. It is automatically activated when an air base is selected.

The air map mode is, at first glance, merely a map of the strategic regions of the map. However, when at war, the regions can be highlighted with three colors:

  • Red, which means the enemy has air superiority.
  • Green, which means the nation or its allies has air superiority.
  • Yellow, which means the air superiority is contested.

This map mode also shows all of the air missions currently set with the total number of planes assigned.
In the strategic air map mode More Ground Crews.png more ground crews can be assigned, by clicking the icon in the desired strategic region. This gives a +10% bonus to mission efficiency in the strategic region.

Supply map mode[edit | edit source]

Supply map mode button The supply map mode shows the supply network for a nation, its territories, and its allies' territories. Reference Logistics for more detail regarding supply.

The two crates in the map mode selection area in the bottom-right of the screen indicate the supply map mode.

Terrain map mode[edit | edit source]

Terrain map mode button
Land terrain in terrain mapmode.
Naval terrain in terrain mapmode.

The terrain map mode shows the terrain of each region on the map using simplified colors. Land terrain has high adjusters for attack, defense and movement of land units while naval terrain has different adjusters for attack, defense and movement of naval units. The terrain map mode can be useful to plan your offense or defense using favorable terrain.

Colors of the terrains:

  • Plains: Brown
  • Forest: Green
  • Jungle: Green
  • Marsh: Green/blue
  • Hills: Light grayish with a bit yellow or green
  • Mountain: Gray
  • Urban: Dark Gray with road patterns
  • Desert: Yellow
  • Ocean: Blue
  • Deep ocean: Dark blue
  • Shallow sea: Light blue
  • Fjords and archipelagos: Cyan

Resistance map mode[edit | edit source]

Resistance map mode button
Resistance map mode.

The resistance map mode shows resistance per state. Yellow indicates low, orange higher and red high resistance.
The percentage of resistance (0%-100%) is shown for each state. A green arrow downwards shows decreasing resistance, a red arrow upwards increasing resistance.
Also 3 resistance tiers are shown:

  • Resistance organized resistance.png Organized Resistance if the resistance is >25%
  • Resistance emboldened resistance.png Emboldened Resistance if the resistance is >50%
  • Resistance uprising.png Uprising if the resistance is >75%
  • Resistance rebellion.png Rebellion if the resistance is >90%

Compliance map mode[edit | edit source]

Compliance map mode button
Compliance map mode.

Shows compliance per state. Lighter blue means more compliance.
The percentage of compliance (0%-100%) is shown for each state.
Also 5 compliance tiers are shown:

  • Compliance informants.png Informants if the compliance is >15%
  • Compliance local police force.png Local Police Force if the compliance is >25%
  • Compliance reorganized workforce.png Reorganized Workforce if the compliance is >40%
  • Compliance volunteer program.png Volunteer Program if the compliance is >60%
  • Compliance a new regime.png A New Regime if the compliance is >80%

Resource map mode[edit | edit source]

Resource map mode button
The Resource map mode.

Shows resource locations and trade routes.

The resources map mode shows any convoy/ trade routes that are connected to the nation and canals/ straits across the world, similar to the naval map mode. However, this map mode looks like the default map mode when zoomed out, but when zoomed in, it shows a resource icon above any state that has a resource, along with the number of that resource produced in that state.

Diplomacy map mode[edit | edit source]

Diplomacy map mode button
The Diplomacy map mode.

Shows diplomatic relations.

The diplomacy map mode shows its information through a multitude of colors.

  • Green is the color that any land owned and controlled by the nation
  • Light green is the color that any land occupied by the nation will be colored.
  • Dark green is the color of any nation that has very good relations with the nation.
  • Red is the color of any nations that the nation is currently at war with.
  • Light red is the color of friendly territory that is occupied by enemies.
  • Neon orange is the color of countries that the nation has wargoals against.
  • Light orange is the color of any country the nation has very bad relations with.
  • Blue is the color of any allied nations.

Factions map mode[edit | edit source]

Factions map mode button
The Factions map mode.

The factions map mode shows the factions that exist around the world. The faction is colored the color of the leader nation, i.e. the Axis is grey due to the color of Germany, and it stretches across all nations in that faction.

States map mode[edit | edit source]

States map mode button
The States map mode.

Shows states and state category/shared building slots.

The states map mode shows an outline of every state in the world. These outlines are different colors based on the state category which is associated with the quantity of shared building slots. This directly controls how many factories are allowed to be built in a state. The type of state can be found by simply hovering over it.

Infrastructure map mode[edit | edit source]

Infrastructure map mode button
The Infrastructure map mode.

The infrastructure map mode shows the level of infrastructure in each state.

Population map mode[edit | edit source]

Population map mode button
The Population map mode.

The Population map mode shows the amount of population in each state.

Ideology map mode[edit | edit source]

Ideology map mode button

The Ideology map mode shows the countries by their ideology.

  • Red is the color of communist nations.
  • Blue is the color of democratic nations.
  • Brown is the color of fascist nations.
  • Gray is the color of non-aligned nations.
The Ideology map mode.
Politics IdeologyFactionNational focusIdeasGovernmentPuppetDiplomacyWorld tensionCivil warOccupationIntelligence agency
Production TradeProductionConstructionEquipmentFuel
Research and technology ResearchInfantry technologySupport Companies technologyArmor technologyArtillery technologyLand doctrineNaval technologyNaval doctrineAir technologyAir doctrineEngineering technologyIndustry technology
Military and warfare WarfareLand unitsLand warfareDivision designerTank designArmy plannerCommand groupCommanderBattle planCombat tacticsShipNaval warfareAircraftAir warfareExperienceOfficer corpsAttrition and accidentsLogisticsManpowerNuclear bomb
Map MapProvinceTerrainWeatherState
Events and Decisions EventsDecisions