Division Basics
Section · Division basics
Division Basics in Hearts of Iron IV
Where a beginner starts: why divisions exist, how to create them, where to spend Army Experience, how to attack and defend, how to place them, ship them by sea, and refill after losses.
Section overview
A division is the main land unit in HoI4. Without it there is no front, no attack, no defense. This section covers the basics: from “why bother” to “how to ship and refill after a fight.”
What’s inside
- Why you need divisions, and how a template differs from a unit on the map
- How to Create a Division and where to spend Army Experience
- Attack, defense, placement, sea transport, reinforcement
What’s not here
- A deep combat-stats breakdown (that’s another section)
- Ready “meta” templates for every patch
- Full navy and air guides
Where a beginner should start
- Why Do You Need Divisions? — so you know what you’re actually moving on the map.
- How to Create a Division and Army Experience — template, training, template edits.
- Then Plan and attack / Put on defense / Position properly — how to fight with your hands.
- Transport by sea and Reinforce divisions — once you have divisions and a living front.
From practice: first learn to put a division on the map and give it an order. A pretty template with no supply, manpower, or front position is just a picture in the designer.
How to use this section next: open the tab for your task → grab the basics → go to the full article if you need the deep dive. Combat stats and the designer “in numbers” live in the neighboring section.
Quick map: where to click
| Task | Open first |
|---|---|
| I don’t get divisions at all | Why Do You Need Divisions? → How to Create a Division |
| I want to edit a template | How to Create a Division → Army Experience |
| I’m attacking | Plan and attack → Position properly |
| I’m holding the line | Put on defense → Position properly |
| I’m shipping across the sea | Transport by sea |
| Divisions are empty after fights | Reinforce divisions |
Why Do You Need Divisions?
A division is a template-built force on the map. Divisions hold the line, break fronts, and close pockets.
Template vs division
Template — the blueprint in the designer: which battalions and support companies sit inside.
Division — the living copy on the map: you train it, send it into combat, repair it, and trade it.
You edit templates in the designer. Divisions fight the war.
What divisions do
- Hold the front
- Break the line and make pockets
- Occupy the rear with garrisons
- Farm Army Experience through combat and exercises
- Turn factory output into real force
More in the article Why Do You Need Divisions?
Roles in plain terms
| Role | Why |
|---|---|
| Line infantry | Hold combat width and not fold |
| Assault / tanks | Push through and close pockets |
| Garrison | Cheap rear and suppression |
| Special forces / landing | Narrow theater jobs |
Practical takeaway: a country with no divisions is factories and focuses into the void. Pick the role first, then build the template for that role.
How to Create a Division
You don’t paint a division onto the map from scratch. First a template in the designer, then the training queue and deploy.
Short chain
- Open Recruit & Deploy → division designer.
- Build or copy a template (you need at least one combat battalion).
- Template edits cost Army Experience.
- Queue the template for training, wait until ready, and deploy it to the map.
Common mistakes
- Mixing up the template and a division already on the map
- Reworking veterans for no reason — unit experience drops
- Spamming divisions with no rifles or manpower in stock
What to check
- Free Manpower at the top of the screen
- Enough equipment in the stockpile
- Where the division will appear after deploy
Practical takeaway: template → training → division on the map. Without Army Experience you can’t make big template edits.
More in the article How to Create a Division.
Army Experience for divisions
Army Experience is the country resource for template edits, doctrines, and some military decisions. Without it the designer barely moves.
Where it comes from
- Division combat
- Exercises (training)
- Some focuses, advisors, and decisions
Exercises give XP safely; combat is faster, but you take losses.
More in the article on Army Experience.
Where to spend it
- Division template edits
- Land doctrines
- Important military decisions that ask for XP
Don’t dump all XP into cosmetic template tweaks if you still need a doctrine unlocked.
Practical takeaway: Army Experience is fuel for growing your divisions. Farm it with exercises before the war and don’t waste it on every tiny edit.
How to plan and attack
An offensive is not “everyone into one tile.” First a plan and planning bonus, then a punch into a narrow sector.
Basics
- Draw a Front Line and an attack plan in the army UI.
- Give divisions time to build Planning bonus — the attack hits harder with it.
- Strike with a fist, not the whole army “evenly along the entire border.”
- Watch Organization and supply: a tired division on red supply pushes poorly.
When a plan helps
Big front, lots of divisions, you need a shared push and the planning bonus.
When manual is finer
Point breakthroughs, micro-pockets, careful tank work on one axis.
Practical takeaway: the plan gathers bonus and direction. You decide the punch: where density is, where the reserve sits, where tanks don’t go.
More in the article How to Plan and Attack with Divisions.
How to put divisions on defense
Defense is not “everyone stands still.” It’s orders, entrenchment, and ground where attacking the enemy hurts.
What to use
- Front Line — hold the border
- Fallback Line — fall back and stand again
- Garrison — ports, cities, rear
Give divisions time to entrench. Don’t fidget the line for no reason.
More in the article on defense.
Where holding is easier
- Rivers, mountains, forests, forts
- Good supply
- A reserve behind the line on a dangerous axis
Tanks in mountains “because they were free” is an expensive mistake.
Practical takeaway: defense works when divisions are in place, with Organization, and with an order. An empty tile “for a pretty line” does not hold.
How to Position Divisions Properly
Placement is a job on the map: where to hold, where to strike, where the reserve sits. Not “one on every tile.”
Density rule
- Find the important axis — capital, supply, plains, enemy push.
- Build a fist of several divisions side by side there.
- On a quiet border and in mountains you can go thinner.
- Keep a reserve behind the line — plug a hole or finish a success.
- Check supply: a dense pile on red supply holds worse.
| Role | Where to put it |
|---|---|
| Line | Main border, long stretches |
| Assault | Narrow sector for a breakthrough |
| Reserve | Just behind a dangerous axis |
| Rear | Ports, cities, occupation |
Practical takeaway: a neat even line across the whole map is almost always weaker than a fist on the important axis and a thin quiet flank.
More in the article How to Position Divisions Properly.
How to transport divisions by sea
Normal transport is port to your or an allied port. That is not a naval invasion onto an enemy coast.
How to move them
- Get the division to a port.
- Select it.
- Right-click the destination port.
- Check that you have enough convoys.
1 Weight = 1 convoy. Check Weight in the division designer. No special research is needed for this kind of move.
More in the article on sea transport.
Don’t mix it up with a landing
- Transport — your / allied port
- Invasion — enemy coast, long prep, naval supremacy
Sailing through raiders is dangerous: cover the route with a fleet and don’t send everything in one trip.
Practical takeaway: port, right-click, other port. Convoys by division Weight. Learn landing on the enemy separately.
How division reinforcement works
After losses a division gets soldiers and equipment back. Division Reinforcement Speed is how fast it fills up again.
How it works
- The division is understrength — short on men and/or gear.
- The game takes soldiers from Manpower at the top of the screen and equipment from the stockpile.
- It travels to the division along supply from the capital.
- It arrives — Fighting Strength goes up.
What speeds it up
- Needed gear in the stockpile
- Free Manpower
- A living supply path from the capital
- Elite priority on assault templates
What slows it down
- Empty stockpile and zero Manpower
- No supply from the capital / encirclement
- Too many divisions on thin logistics
- Everything set to Elite — no real priority
Practical takeaway: reinforcement is not Organization. Organization climbs by resting. Reinforcement is when men and guns actually arrive in the division.
More in the article on Division Reinforcement Speed.