Division Types
Section · Division types
Division types in Hearts of Iron IV
Which division belongs on the line, which one punches through, which one goes to mountains or the shore, and which one you never train in the queue — you hang it on occupation. Roles in outline: infantry, motorized infantry, tanks, cavalry, special forces and garrison.
Section overview
A division type is not “an icon in the designer”. It is a job in the war. The same country holds the front with infantry, rips the line with tanks, closes the pocket with motorized infantry and suppresses Resistance with a separate garrison template. The question is not “which division is best”. It is “what are you solving right now”.
What is inside
- Line infantry and motorized infantry: front versus speed
- Tanks: Breakthrough, not a replacement for the whole army
- Cavalry: barely a war tool, more often an abuse trick and cheap rear
- Mountaineers, Marines, Paratroopers — special forces for terrain and theater
- The shared special forces cap and occupation garrison (not an army order)
What is not here
- Full “patch meta” templates and a button-by-button designer tour
- Combat numbers like Organization and Breakthrough — that is another section
- How to create a division from scratch and where Army Experience goes — that is division basics
Where to start
- Infantry — if you do not know how to fill tiles. Without it most countries cannot hold a line.
- Tanks and motorized infantry — once the front exists and you need to punch through and stop the enemy slipping the pocket.
- Mountaineers / Marines / Paratroopers — only if you have mountains, a landing or a drop. Then open the special forces cap tab immediately.
- Cavalry and garrison — when the question is not “how to fight”, but “how not to burn the army on the rear and on national focuses conditions”.
From practice: first put infantry on combat width. A pretty tank corps with no line around it is a hole the AI walks into. Special forces without a regular army slam into the battalion ceiling.
How to use this section: open the tab for the type → grab the role and the usual mistakes → go to the full article if you need templates, micro and numbers. Combat stats and the designer “in figures” sit next door, not here.
Quick map: which tab to hit
| Job | Open first |
|---|---|
| Hold the front cheap | Infantry |
| Need to close a pocket in time | Motorized infantry |
| The line will not budge | Tanks |
| Need a paper army or a cheap rear | Cavalry → Garrison |
| Mountains and hills | Mountaineers → Special forces cap |
| Landings, rivers, marshes | Marines → Special forces cap |
| Drop in the rear / an island | Paratroopers → Special forces cap |
| Partisans eat stockpiles, and you hate parking real divisions | Garrison |
Infantry
The infantry division is the mass unit on the map. Cheap, no fuel, sits well in a tile. The question is not “does it beat tanks one for one”. It is “do you have enough bodies to cover the front”.
Why you need it
- Hold a long line and take combat width
- Defend and not melt while the strike fist hits elsewhere
- Mop up and occupy tiles after a tank Breakthrough
Without infantry most countries have nothing to fill the border with. Tanks do not replace that: you get few of them, they are expensive and they drink fuel.
Where it is inefficient
- Infantry does not run blitzes
- Infantry does not land on an enemy shore, does not walk marshes well, does not fight mountains well
- Not an occupation garrison: a frontline infantry template is too expensive for that job
More in the article on infantry.
How it looks in a real game
A normal HoI army is a pair: infantry holds and occupies, tanks cut. “Infantry or tanks” is almost always a false choice. On the attack infantry wants artillery and density; on defense Organization and position matter more than a pretty Breakthrough number on the template card.
Practical takeaway: fill tiles with infantry first. The strike fist only makes sense once the line already exists.
Motorized infantry
A Motorized Infantry division fights almost like regular infantry. The real difference on the map is speed and cost: trucks and fuel instead of “just people with rifles”.
Why you need it
Mostly to close the pocket in time: reach the gap before the enemy slips out. Foot infantry often simply does not make it.
In a head-on meat grinder on one tile, wheels do not work miracles. Stats and numbers decide there, not how fast the division walks the map.
The real point of motorized infantry is to get into operational space fast and shut the pocket. If tanks break through and drive into the enemy rear, motorized infantry just tours the gap and tries not to pick fights.
Why it does not sit on the whole front
- More expensive than line infantry
- Needs oil
- The line is still held by cheaper foot divisions
A few motorized templates in reserve often pay for themselves with one pocket closed on time.
More in the article on motorized infantry.
Practical takeaway: this is not “better infantry for the whole border”. It is a fast reserve to exploit a Breakthrough.
Tank divisions
A tank division is a strike tool: Breakthrough, Armor, Hard Attack. Expensive in industry and fuel. The question is where to hit, not “park armor on every tile”.
Why you need it
Line infantry holds well but slowly grinds a fortified line. Tanks work differently: high Breakthrough and division Armor let you cut the front and close pockets instead of sitting in place for months.
It makes sense on plains and wherever you can actually feed fuel and supply.
A major can field several large tank fists — Germany, for example. A minor can usually afford one small-to-medium fist — Portugal, for example.
What not to do
- Do not put tanks on the whole line “because they are stronger”
- Do not throw them into mountains, marshes and other bad terrain
- Do not mix the job with infantry: infantry is front and mass, tanks are a chosen sector and Breakthrough
Usually you keep a separate tank corps, hit a narrow sector, and let infantry cover the flanks.
More in the article on tank divisions.
Practical takeaway: tanks with no attack plan and no infantry around them are burned fuel. Pick the Breakthrough axis first, then park the fist.
Cavalry
In combat cavalry is almost infantry, only more expensive in infantry equipment and slower to train, but a bit faster on the map. Against real infantry and tanks it loses the plot quickly.
Why people still spam it
More often not for war, but for abuse: train a pile of divisions at once, inflate army size for conditions like Anschluss, park cheap garrisons of one Cavalry battalion.
It is available on day one, with no special forces tree — that is why people love it while factories are still weak.
What to remember
- It eats infantry equipment; there is no separate “horse” resource
- One battalion is narrow and suppresses Resistance well — classic garrison
- Once motorization and tanks arrive, these tricks usually get dropped
More in the article on cavalry.
Practical takeaway: cavalry is an abuse tool and a cheap rear, not a tank corps. Feeding the front with it “because it is faster than infantry” is an expensive habit.
Mountaineers
A mountaineer division is built from Mountaineers battalions. That is special forces: more expensive and slower to train, but clearly stronger than line infantry on hills and mountains.
Why you need it
On rough ground regular infantry eats terrain penalties. Mountaineers hold with fewer troops or punch faster. The template exists for terrain, not as “just better infantry”.
Build 1–6 mountaineer divisions and send them into the mountains: the Caucasus, the Alps and the rest. Regular infantry eats hellish penalties there; Mountaineers feel at home.
Where it does not pay
On plains the fight looks similar, and the special forces surcharge does not pay off. You usually keep a few templates and move them onto mountain sectors — that is the micro.
They eat the shared special forces cap. You cannot cover the whole front with them “just in case”.
More in the article on Mountaineers.
Practical takeaway: a few mountaineer divisions for terrain are insurance. On plains they are just expensive infantry that also eats the special forces cap.
Marines
A division with Marines battalions is special forces for water: landings, marshes, rivers. Not a replacement for line infantry on land.
Why you need it
Regular infantry coming off water or through marsh eats a penalty. Marines are for the shore: take a beachhead instead of paddling in the surf for weeks. Around them on land, line infantry still does the job.
A lot of players build them only for naval invasions, or skip them and land with regular infantry. That is a common mistake. Send Marines here:
- Naval invasion: train a few Marine divisions and land — the UK or Oceania, for example
- River crossing: force the Rhine, the Dnieper or another river
- Marshes: send a Marine corps into marsh — the USSR and Paraguay will punish you hard with theirs
Limits
- Special forces cap
- More expensive in infantry equipment, longer training
- You do not put them on the whole line at once
Usually you keep a landing fist and hit a chosen shore.
More in the article on Marines.
Practical takeaway: Marines are landings and water. Treating them as “the best infantry for the whole army” burns the special forces cap.
Paratroopers
An airborne division is a template with Paratroopers battalions. The point is not that they fight better on plains. It is that you can drop them where feet cannot walk in time.
Why you need it
A tile across a river, a capital in the rear, an island with no port — infantry will not get there in time. Paratroopers put a division into the chosen tile if you have transport planes and 70% air superiority.
Train a few Paratrooper divisions and, before a war or a big offensive, drop them on key infrastructure: railways (cuts supply), supply hubs (cuts supply), air bases (gives close air support room to work).
Sometimes players use Paratroopers for a fast win: Germany, 1940, skip the Benelux detour, drop a few airborne divisions on France’s key cities including the capital. France capitulates without a real land offensive.
What not to do
- Do not cover the front line with them
- Do not jump “into an empty field with no job”
- Do not forget they need a link-up from the ground with regular infantry after the drop
Training takes longer than Marines and Mountaineers. The special forces cap is shared.
More in the article on Paratroopers.
Practical takeaway: Paratroopers are a drop onto one tile. Without transports, air and a link-up plan they are expensive special forces in empty sky.
Special forces cap
Special forces in HoI are not “the whole army in berets”. It is a battalion tag: Marines, Mountaineers, Paratroopers, Rangers. The game hard-caps how many of those battalions you can field at once.
How it is counted
The cap counts battalions, not divisions. Base is a share of regular (non-special-forces) battalions, but even a tiny country gets a floor (24 battalions): while the regular army is small, you sit on that floor, not on the percentage.
Regular infantry, cavalry and tanks are not in the cap — they raise it. Amphibious Tank Battalions and Amtrac Battalions eat the ceiling too.
Plain version: the more regular battalions you have (infantry, tanks and so on), the more special forces battalions you may field.
How to live with the ceiling
- Do not spam special forces instead of a line army
- First grow regular battalions — the ceiling rises
- Doctrine, the no-DLC research and country bonuses also raise the cap
- Keep special forces pointed: shore, mountains, drop — not sea to sea
More in the article on special forces.
Cap calculator
Base with no focuses or doctrines: 5% of regular battalions, floor 24.
Special forces allowed 24
5% gives 0, so the floor of 24 kicks in.
Practical takeaway: special forces are expensive terrain infantry with a hard ceiling. You raise the ceiling first with regular army size, not by renaming every template “elite”.
Garrison divisions
An occupation garrison division is not an army on the map. It is a template you assign to captured land: the game itself counts how many of those “divisions” you need to suppress Resistance.
That is not this garrison
The army Defense order is also sometimes called a garrison: divisions sit on the map and watch ports, borders, air bases. That is not this garrison. The occupation template lives in Occupied Territories. You do not train a hundred of them in the deployment queue.
Why a separate template
So you do not feed the rear with frontline divisions. Top templates should fight. The garrison eats manpower and equipment from stockpile, but the line does not thin out for partisans.
The game looks at the template’s Suppression. A template with zero Suppression will not be taken for garrison.
What people usually assign
In practice two working minimums: one Cavalry battalion (cheap, for minors) and one light tank battalion (dearer, bleeds less because of the equipment share, more a major thing). Where to click: country flag → Occupied Territories → template icon, top left.
More in the article on garrison divisions.
Practical takeaway: occupation garrison is a cheap template in the captured-land menu, not “another army” you drag with the mouse.