Best Defense Template 2026

Article · Defense template

Best defense templates in Hearts of Iron IV

Seven templates I actually built and ran in games: from cheap Infantry at 10 Combat Width to special forces on mountains and marshes. Not “hold a German tank fist”. Against normal AI the line holds.

Which template you need

For a minor

Infantry 10 CW

Take it if you are a minor and have almost no military factories for vehicles.

Armored Infantry 10 CW

Take it if you are a minor but already have 7–10 military factories on Medium SP Anti-Air.

Infantry 15 CW

Take it if you have 2–5 military factories on artillery and you want to counter-attack.

Rangers 15 CW

Take it if you stand in forest or jungle, not on plains.

For a major

Armored Infantry 20 CW

Take it on a normal front: the toughest template of the lot.

Mountaineers 25 CW

Take it if you hold mountains and hills. Almost useless on other terrain.

Marines 25 CW

Take it for marshes and landings. Do not hold dry plains or other terrain — no buffs there.

Which template to field

Infantry, Combat Width 10

Division designer: cheap defense template, 5 Infantry battalions, Combat Width 10
5 Infantry battalions. Engineer Company on the right, Heavy Weapons Company in the regiment.

The cheapest backbone. 5 Infantry battalions, Engineer Company, Heavy Weapons Company in the regiment. The width fits every land terrain. Any country in the game can afford this. A micro-nation can drop Heavy Weapons Company if the research does not fit.

One such division will not hold an army. The trick is cost: you stamp them in bulk. A minor is covered by 2–5 per tile, a major from 6. Empty vs tanks: you need Support Anti-Tank. Support Artillery can go in companies if Organization allows (often after doctrines). Fine idea: you get Soft Attack.

Pros
  • Low cost, you can stamp them in bulk.
  • Little research: Heavy Weapons Company and Engineer Company.
  • Combat Width fits terrain cleanly.
Cons
  • Wins by numbers, not quality. One template will not hold a whole army.
  • Useless vs tanks without anti-tank.
  • You have to research Heavy Weapons Company.
Cost of Infantry Combat Width 10
ResourcePer division
Manpower5540
Infantry Equipment540
Support Equipment35
Combat Width10

Total for all divisions

Total from the table above, for the chosen number of divisions of this template.

Manpower
66,480
Infantry Equipment
6,480
Support Equipment
420

Verdict. Take it as a minor if you have no vehicles. You can add Support Anti-Tank / Support Anti-Air / artillery in companies as needed — watch supply. It holds a moderately strong enemy if you have many of these divisions.

How I picked the templates

First I sketched a lot of variants. Then I tested them in a real game — whether they actually live in a full campaign, not only on paper. I checked if a minor or a major industry can field the template, and whether it really stands against the enemy.

I fiddled with width carefully: 10, 15, 20 and 25. Ten fits 50, 60, 70 and 80 Combat Width; I left 25 for mountains and marshes — base width there is 50, and this size feels more confident. Then I fitted economy: what you can build from scrap without real vehicles, where you already need Medium SP Anti-Air on 7–10 factories, and what only a large power can afford.

I did not smear special forces along the whole line — the cap does not allow it. So Rangers, Mountaineers and Marines only got the directions where terrain actually buffs them.

I tested every template in live games, not in a vacuum designer. If the division held cheap Infantry against normal AI — I kept it. If it only worked in perfect conditions and fell apart on the next tile — it was gone, no mercy.

Bottom line

Defense in HoI is not one “correct” template for every case. It is a line for your industry and a slice of special forces for the map. It will not hold top tanks — that is by design. Against the AI it is enough if you do not put one division per tile and do not mash all seven into one mess.