Artillery in Divisions

What artillery in divisions is

In Hearts of Iron IV you build a division out of pieces: infantry, tanks, support, and so on. Artillery is the piece with the guns. Its job is not to “fill the line with men,” but to give the division soft attack — punch against soft targets: regular infantry, militia, and divisions without armor.

In the game this equipment is called towed artillery. In slang players almost always just say arty.

Important: artillery is not the same thing as anti-tank guns or anti-air. AT hits tanks, AA hits planes, artillery mainly boosts damage against infantry. Self-propelled artillery (SP artillery) is a different story: it sits among tank battalions and brings armor. This article is about regular towed artillery in a division.

How to get artillery

Artillery does not show up in a division “just because.” You need three steps:

1. Research artillery. In the tech tree open the artillery branch and unlock production of towed artillery. Then research upgrades — the guns hit harder.
2. Start production. On military factories, queue towed artillery. It needs steel and tungsten — without resources the line will stall.
3. Add artillery to the template. In the division designer, spend army experience to add either a line Artillery battalion or a Support Artillery company. Then divisions on the map fill their guns from the stockpile.

No guns in the stockpile — the template has artillery “on paper,” but divisions stay half-empty and hit weaker. A pretty template without production does not work.

Where you can put artillery

In the designer, regular artillery has two main slots. Different buttons, different effect.

1. Line battalion “Artillery”

It sits under the Combat Support Battalions tab. This is a full combat battalion in a division regiment.

• Gives 3 combat width.
• Needs 500 men and 24 guns (quite a lot).
• The battalion has 0 organization — by itself it does not “hold” a fight.
• Hits harder than the support company.

2. Company “Support Artillery”

It sits under the Support Companies tab. This is division support, not a line battalion.

• Gives no combat width — the division does not get wider.
• Needs 300 men and 12 guns.
• Organization is also 0.
• Combat stats are cut by about 40%: cheaper on width, but weaker than line artillery.

There are also nearby options: motorized artillery for fast divisions, rocket artillery later in the tech tree, SP artillery with tanks. For a beginner, regular line artillery and the support company are enough at first.

Why a division needs artillery

Because infantry alone holds well, but pushes poorly. Artillery is exactly the template piece that raises the division’s damage against enemy infantry.

• Hits harder on attack. A division with artillery squeezes the enemy off a tile faster than naked infantry.
• Helps on defense too. While the enemy piles onto you, high attack still cuts their organization and manpower.
• Cheaper than tanks for this role. If the job is to strengthen an infantry division, artillery is usually simpler and more accessible than jumping straight into armor.
• Scales with tech. The newer the towed artillery, the harder the same battalions and companies in the template hit.

The downside in the package: artillery has 0 organization. The more artillery you have relative to infantry, the lower the division’s average organization — it hits brighter, but “breaks” faster in a long fight.

When and where to put artillery

• Almost always on front-line combat divisions. If the division needs to both hold and push — artillery belongs there.
• Take the support company first. For a beginner this is the clearest move: more punch without extra combat width and without a huge appetite for guns.
• Add line artillery when you have factories and understand width. Each Artillery battalion is another +3 width. Nine infantry and two artillery is already a very different number from “just infantry.”
• Not required on garrisons and the rear. Divisions that only sit in the rear or suppress resistance often do not need fat artillery.
• In forests, jungles, marshes, and on landings, line artillery suffers. The line battalion takes clear attack and movement penalties there. On that terrain do not expect miracles “like on plains.”
• In fast motorized/tank corps look at motorized artillery or SP artillery, so the guns do not slow the whole division’s pace.

Practical rule: infantry is the frame, artillery is the punch. Do not build a division “out of guns alone”: it lights up soft attack and falls apart fast on organization.

How effective artillery is

Artillery’s effectiveness is in soft attack: it greatly strengthens a division against regular infantry. It is not a universal answer to every front-line problem.

Artillery by role

A short cheat sheet for where artillery makes sense, and where it does not.

How this looks in practice

A typical beginner path:

1. Build the division around regular infantry.
2. Add a Support Artillery company — the division immediately hits noticeably harder.
3. When factories can feed the guns, add one or two line Artillery battalions for the width you want.
4. Watch division organization: if it has dropped too hard — you already have too much artillery relative to infantry.

Width thinking example: nine infantry is about 18 width. Two line artillery battalions add another 6. That is about 24 from these pieces alone — before other support and before the tile limit. So you count artillery together with width, not “by eye until it looks nice.”

Tips

• Do not mix up line artillery and the support company. Different slots, different width, different punch.
• Production first, fat template second. Otherwise divisions will be hollow on guns.
• Keep the infantry / artillery balance. Infantry gives organization, artillery gives punch. You need both.
• Research artillery techs. The same template with newer guns hits harder without rebuilding the whole army.
• Do not treat artillery as the answer to tanks. For armor, look at anti-tank tools separately.