Hearts of Iron IV Beginner's Guide: How to Survive Your First Game

Hearts of Iron IV opens with a world map, a clock ticking in the corner, and about forty buttons that all look urgent. Most of them can wait. Your first run comes down to four things: pick a nation that won't punish you for messing up, keep the game paused while you think, get factories going in the right order, and hand your army something simple to fight with. Get those mostly right and you'll still be standing when the big war starts.

One more thing before you click play: turn Historical AI Focus on. It's a checkbox in the bottom right of the setup screen. With it on, Germany follows the familiar script instead of going sideways in 1937, which makes the whole game way easier to learn. Start in 1936 too, not 1939. The later start drops you straight into a war with an economy you've never seen before. The '36 start gives you three years to build.

Numbers below are from the live game (patch 1.16 as of mid-2026), so they should hold for a while.

Picking Your First Country

The nation you pick matters more than any guide admits. A bad first pick means getting rolled in 1938 and learning nothing. A good one gives you room to make mistakes.

The safe picks

The United States is the sandbox. Two oceans and a huge navy sit between you and everyone who wants you dead, so nothing is coming for Washington in 1937. You get years to poke at production lines, research, and plane design with zero pressure. The catch is that the US starts shackled by the Great Depression laws, so your economy takes a while to wake up. Great for learning menus, kind of boring for learning combat.

Canada is the smaller version. You're in the Allies from the start, so you can ship troops to a real front, but nobody is ever going to invade Ottawa. Small economy, small army, low stakes. If total safety sounds nice, this is it.

Sweden is the pick nobody mentions enough. Neutral, ignored by the big powers, sitting on plenty of steel and iron ore, with a solid industrial base for its size. You can learn the economy and diplomacy systems at your own speed, then pick a fight with a neighbor when you feel ready. The focus tree is smaller than a major's, which is honestly a plus when everything's new.

The fast-learning picks

Italy is probably the best teaching nation in the game. The war in Ethiopia kicks off almost immediately, which works as a low-stakes tutorial for moving divisions, watching supply, and running air support. Lose some men there and nobody cares. After that you've got the Mediterranean to play in: North Africa, the Balkans, Greece. Italy's navy is decent, its industry is middling, and its focus tree won't drown you. You'll make plenty of mistakes here and the game will let you keep going anyway.

Germany is the classic recommendation and it still holds up. Big industry, a strong starting army, and a focus tree that basically walks you through the war in order: rearm, take Austria, take Czechoslovakia, then Poland, then France. Each step is a clear milestone. The downside is that everything you do shakes the world, so there's less room to quietly mess around. If you want a structured first campaign with obvious goals, Germany is the pick.

Skip these for now

The Soviet Union looks friendly because of the giant manpower pool, and it is forgiving in that one way. But you're managing a huge border, a purge mechanic that guts your officers, and a bad starting army all at once. That's a lot of plates for game one.

France has political stability problems baked in that new players usually can't fix yet. China gets invaded early and has almost no industry. And tiny nations with generic focus trees (Bhutan, Liberia, most of South America) teach you bad habits because nothing you do matters.

So who actually wants a min-maxed start? Nobody, in game one. Pick Italy or Germany to learn fighting, or the US or Sweden to learn systems.

Understanding the UI and Time Speed

The interface looks worse than it is. Most of it is the top bar, the map, and a row of buttons down the left edge. Learn the bar first and the rest falls into place.

The top bar

Across the top of the screen you've got the numbers that run your whole nation.

| Number | What it means | What a beginner needs to know | | --- | --- | --- | | Political power | Spend on laws, advisors, and focuses | You gain +2 a day at base, so it piles up slowly. Don't waste it. | | Stability | How happy the population is | 50% is neutral. Above that you get bonuses, below it you get penalties to factory output and political power. | | War support | How up for a fight the country is | Gates better economy and conscription laws. Defensive wars raise it. | | Manpower | Bodies available for units | Runs dry fast if you spam divisions. Watch it. | | Factories | Three numbers in a row | Military factories, dockyards, then civilian factories. This is your whole economy at a glance. | | World tension | The globe with a percentage, top right | How close the world is to war. Democracies need it high before they can act. | | Command power | Special military actions | Caps at 200. Used on promotions and officer abilities. |

The left side of the screen holds the big menus: research, diplomacy, trade, construction, production, recruiting, and logistics. Little alert tabs pop up along the top when something needs attention, like an unfilled research slot or a focus waiting to be picked. Click those the moment they show up. They're free money.

Speed controls

Time runs at five speeds, changed with the plus and minus buttons next to the date or by pressing the number keys 1 through 5. Spacebar pauses. That pause key is the single most important button in the game.

Here's the habit to build: play paused. Pause when you're picking a focus. Pause when you're setting up a production line. Pause when a battle starts going badly. The clock doesn't punish you for stopping, and most first-game disasters happen because someone let time run while they fiddled with a menu and forgot about the front.

A rough rhythm for 1936: run at speed 3 or 4 while construction and research are ticking, drop to speed 1 or pause whenever anything needs a real decision, and slow way down once fighting starts. Peacetime years are for setting things up. Wartime is for paying attention.

Map modes

The map mode buttons sit near the bottom right. The two worth using early are the state view (default, shows states and their building slots) and the supply map mode. Flip to supply the first time your troops start losing a fight they should be winning. Half the time the answer is that they're starving, not outgunned.

Setting Up Your Economy Early

Factories are the whole game. Every tank, rifle, and plane comes off a production line somewhere, and the nation with more lines usually wins. Getting the early build order right matters more than any battle you'll fight in 1939.

Civs first, then mils

Civilian factories build things. Military factories make guns and tanks. So a military factory built in 1936 produces weapons for the entire game, but only if you have the civs to build it.

The standard opening is civilian factories for the first couple of years, then switch to military. Build civs from January 1936 through roughly late 1937 or early 1938, then start dropping mils and never really stop. Exact switch dates vary by nation (Germany can go earlier, the US can go later), but the shape is the same.

Here's what the buildings actually cost:

| Building | Cost | Notes | | --- | --- | --- | | Civilian factory | 10800 | Base output 4 per day when working construction | | Military factory | 7200 | Base output 3.5 per day | | Naval dockyard | 6400 | Base output 2 per day. Slow. Only build if you need a navy. | | Infrastructure | 6000 | +20% construction speed in the state per level, plus +15% resources |

Two notes on that table. Infrastructure is usually not worth it early just for the construction bonus, since 6000 gets you most of a mil factory instead. Build it when you need the resources or the supply. And dockyards are only worth it if your war plan actually needs ships. If it doesn't, let the ones you have build convoys and move on.

Build in your high-slot states first. States have a limited number of building slots based on how developed they are, so Greater London or the Ruhr fit way more factories than a rural region does.

Change your laws

This is the step beginners skip and it costs them the game. Laws live in the political menu and cost political power to change.

The economy law is the big one. Civilian Economy, where most nations start, is a disaster for a country planning a war:

| Economy law | Consumer goods factories | Civ construction speed | Mil construction speed | | --- | --- | --- | --- | | Civilian Economy | +35% | -30% | -30% | | Early Mobilization | +30% | -10% | -10% | | Partial Mobilization | +25% | - | +10% | | War Economy | +20% | - | +20% | | Total Mobilization | +15% | - | +30% |

Read that consumer goods column as "the share of your factories doing nothing useful." On Civilian Economy, more than a third of your civs are making toasters. Claw your way up to Partial Mobilization as soon as the war support requirement lets you (it needs 25% war support, which aggressive nations hit easily). War Economy wants 50% war support and usually waits for the actual fighting.

Trade law matters too. Free Trade gives +15% factory output, +15% construction speed, and +10% research speed, in exchange for putting more of your resources on the market for others to buy. It sounds like giving stuff away, and it kind of is, but those bonuses are worth it. Export Focus, the default, is +10%, +10%, and +5%. If you can run Free Trade without tanking a resource you need, do it.

Research and production

A few rules of thumb that will carry you:

• Don't research ahead of the date. Techs have a year on them, and starting one early eats a stacking penalty. At a full year ahead, your research speed drops to about a third of normal. Wait until the calendar catches up.
• Grab the computing techs. The Electronic Mechanical Engineering and Mechanical Computing entries in the electronics tree speed up all future research. They're cheap and they pay off the whole game.
• Get your research slots. Some national focuses unlock extra research slots, marked with a beaker icon. Take those early. More slots means more of everything else.
• Put military factories on infantry equipment first. The wiki's own beginner advice, and it's right: until you've built a real industrial base, guns for infantry are the priority. Every division you train needs them, and shortages here will cripple you worse than any fancy tank would help.

Basic Division Templates for New Players

Divisions are built from templates, and templates are where new players either overthink or underthink. The truth for a first game: two templates will carry you. One to hold ground, one to push.

How templates work

Open the division designer from the recruit menu. A division holds up to five combat regiments, each regiment holds up to five battalions, and the whole thing can take up to five support companies. Editing costs army experience, which you earn by fighting and by exercising divisions in peacetime.

| Edit | XP cost | | --- | --- | | Add or swap a battalion | 5 | | Add or remove a support company | 10 | | Add a regiment of a new unit type | 25 |

Support companies are the bargain here. They add no combat width, so they're pure bonus on top of whatever your battalions already do.

The two templates you need

The holder. Nine infantry battalions, so 18 combat width, with an engineer company. Engineers boost entrenchment, which is the stat that makes a division sitting still harder to push. This is the template you spam along a defensive line. Cheap on equipment, cheap on manpower relative to what it does, and it'll sit on a river line for months without breaking. If you'd rather keep it rounder, ten infantry battalions (20 width) works fine too.

The pusher. Seven infantry and two artillery battalions, the famous 7/2, also 20 width. Artillery battalions are 3 width each versus 2 for infantry, and they add a lot of soft attack, which is damage against unarmored targets. This was the community's default attacking template for years. The meta has moved on since the combat width rework, and a dedicated player will build better ones, but for learning the game it's still solid: it hits hard enough to win fights and it doesn't eat your whole stockpile of artillery.

Add support companies as experience allows. Priority order for a beginner: engineer, then support artillery, then recon. Field hospitals are worth it if manpower is your bottleneck (they return a share of casualties to the pool), and a logistics company helps a lot once you're fighting in bad supply areas like North Africa or Russia.

Combat width, quickly

Each battle has a width limit based on the terrain of the province being fought over. Divisions over the limit don't all fit, and going over draws a penalty that can reach -33% before extras sit in reserve doing nothing.

| Terrain | Base width | Added per extra attack direction | | --- | --- | --- | | Plains, Desert, Hills | 70 | +35 | | Forest, Jungle | 60 | +30 | | Marsh, Mountain | 50 | +25 | | Urban | 80 | +40 |

Two takeaways. One, mountains and marsh are narrow (50), so big fat divisions waste width there and small ones shine. Two, attacking the same province from several sides adds width, which is exactly why encirclements and multi-pronged pushes work. A 20-width division fits comfortably almost everywhere, which is the quiet reason the 7/2 stuck around so long.

Don't chase perfect width math in game one. Just know that a wall of 18-20 width divisions will fight fine in most terrain, and that attacking a mountain province from one direction with six divisions is throwing men away.

Exercise your armies

Peacetime armies can train. Select a division or army, hit the exercise button, and they'll burn some equipment to gain experience and climb from green toward regular. You want this for two reasons: the army experience pays for template edits, and trained divisions fight noticeably better than raw ones. Just remember to turn it off when war breaks out, because exercising eats gear you'll suddenly need.

Common Beginner Mistakes to Avoid

Everything below is a mistake that ends first campaigns. All of it is fixable.

Not making enough guns. The number one killer. Infantry equipment shortages mean new divisions deploy half-empty and existing ones can't reinforce. Keep military factories on infantry equipment until you genuinely have a surplus, and check the logistics stockpile screen before you queue up ten new divisions.

Leaving the economy law alone. Covered above, worth repeating. Playing 1936 to 1939 on Civilian Economy with a third of your factories making consumer goods is how you show up to the war outnumbered in everything.

Researching years ahead. That ahead-of-time penalty is brutal. A tech two years early can take three times as long to finish. Note the year on each tech and let the calendar come to you.

Attacking without a plan. Battle plans aren't decoration. Draw a front line, draw an offensive arrow, and let the planning bonus build for a couple weeks before you hit go. Planning adds a real attack bonus, and skipping it means every push costs more men than it should. Draw the plan, wait, then attack.

Ignoring supply. Troops out of supply lose organization and equipment fast, and it usually shows up as a battle you should be winning slowly going sideways. Check the supply map mode before big offensives, and remember that pushing deep into Russia or North Africa outruns your hubs. A logistics company on your pusher template helps.

Stacking the front too thin. One division per province on a long front is an invitation to get punched through. Concentrate force where you're attacking and hold the rest with cheap holders. You don't need to be strong everywhere, just where the fighting is.

Trading for resources you already make. If you produce steel and you're short a little, the excavation techs in the industry tree give +10% resource output per tier, up to +50% for all five. That's usually better than handing civilian factories to another nation for a few steel.

Never pausing. The clock is not your friend. Every disaster in a first game traces back to time running while attention was somewhere else. Spacebar is free.

The single most useful habit, if you take one thing from all this: pause more than feels necessary, and keep the top bar's factory and manpower numbers in the corner of your eye. Wars in Hearts of Iron IV are won by whoever showed up with more guns, and guns come from boring peacetime decisions made in 1936.