Best Defense Template 2026

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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 armored fist». Against normal AI the line holds.

Which template you need

If you have almost no military factories and no vehicle tech, take «Infantry 10 CW»: five infantry battalions cost almost nothing and hold the line by numbers. Once you have 7–10 military factories and the anti-air research, switch to «Armored Infantry 10 CW»: Medium SP Anti-Air blocks part of the damage with armor and covers you from enemy aviation.

If you have 2–5 military factories on artillery and want to hit back, not just hold, take «Infantry 15 CW»: six infantry battalions plus artillery give defense and Soft Attack for counter-attacks.

Terrain gets its own templates, and only there: forest and jungle — «Rangers 15 CW», mountains and hills — «Mountaineers 25 CW», marsh — «Marines 25 CW». All three count against the Special Forces cap, so you cannot field many, and on dry plains they are useless.

For a major and the late game on a normal front — «Armored Infantry 20 CW»: nine infantry battalions with Medium SP Anti-Air, the toughest template in this article. Digging it out of a tile is usually beyond the bot. Now on to the templates themselves.

Which template to field

Infantry, Combat Width 10

  • Cheap
  • For a minor
  • Defense
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 you cannot fit in the research.

One such division will not hold an army. The trick is cost: you churn them out. A minor is covered by 2–5 per tile, a major from 6. Nothing against tanks: you need Support Anti-Tank. Support Artillery can go in companies if Organization allows (often after doctrines). Good call: you get Soft Attack.

Pros
  • Low cost, you can churn them out.
  • 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 spread special forces thin 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.