Map

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

The Map can be divided into four subdivisions:

• Provinces are the smallest subunit of the map, it is here that terrain, weather, capitals, land combat and victory points are handled.

• States are the next smallest subunit of the map, where construction, manpower, population, and country borders are decided.

• supply areas are the next largest subunit of the map, here logistics and supply are handled.

• Strategic areas are the largest of the subdivisions, and are where naval combat and air combat occur.

Map modes

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.

The map mode icons.

Default map mode

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.
• 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 their 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, such as the Rhineland.

Strategic navy map mode

The Strategic Navy map mode.

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:

• Purple trade routes are importing resources from other nations.
• Yellow trade routes are transporting supplies from the capital to any location that is lacking a land route to the capital.
• Blue trade routes are transporting resources from any location lacking a land route to the capital into the capital.

All of these 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

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
		Navies
		Submarines
		Trade
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 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

Strategic air map mode

The Strategic Air map mode.

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 plains assigned.

Supply areas map mode

The Supply Areas map mode.

The supply map mode shows the various supply areas of the world. Supply areas are almost always smaller than strategic regions, but almost always larger than a single state and are most often a group of states. Supply areas that are controlled by the nation or an ally will be colored green if the army stationed in it, if there is any, does not exceed the supported supply limit, and supply regions colored red have armies that are exceeding the supported supply limit or, if there is no army, has no supported supply at all. Additionally, supply areas on the coast or that neighbor the nation will be colored blue. This map mode also shows naval trade routes in the same fashion that the naval map mode does.

Each supply area has a symbol that has a jerrycannext to a , and, if it is coastal and has a naval base, a next to it, each of which have different meanings.

• The jerrycanhas a number above it, for example, 0/114. The first number is how much supply is being used, rounded to the nearest integer. The second number is the supported supply limit.
• The has a number below it which is the total infrastructure across all the states the supply area encompasses. Clicking on the will queue one infrastructure for each state in the supply area for each click, as long as it does not exceed a total infrastructure of 10 in a state.
• The , if it is applicable to the supply region, has a number below it which, unlike the infrastructure, is the highest naval base level in the supply area.

Terrain map mode

The terrain map mode.

Shows the terrain of each region on the map using simplified colors.

Resistance map mode

The Resistance map mode.

Shows resistance per state.

The resistance map mode shows the level of resistance in occupied provinces. There are three colors of resistance in a state in this map mode.

• Yellow means there is a low level of resistance, less than 30% resistance.
• Orange means there is a medium level of resistance, less than 65% but more than 30% resistance.
• Red means there is a high level of resistance, more than 65% resistance.

Resource map mode

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 province.

Diplomacy map mode

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

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

The States map mode.

Shows states and population/ state category.

The states map mode shows an outline of every state in the world. These outlines are different colors based on the population of the state/ state category. 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.