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Europa Universalis IV Army and Navy Composition: Every Unit Type Ranked

Europa Universalis IV army and navy composition guide. Unit types and army/navy composition ratios by military tech level.

Compiled from patch notes, community consensus and Steam review data. Updated .Published June 1, 2026.
Europa Universalis IV screenshot 1Europa Universalis IV screenshot 2Europa Universalis IV screenshot 3
Official screenshots from the Europa Universalis IV Steam store page, © the publisher. Shown for identification; they are not step-by-step guide illustrations.

Europa Universalis IV is a grand strategy sandbox spanning 1444 to 1821, where you steer one nation through war, trade, religion, and exploration. There is no single win condition, only the world you build from a one-province minor or a great power start. The systems interlock so tightly that one bad war can unravel a century of planning.

This guide ranks the army and navy composition that matter, explains what makes each one strong, and tells you which builds they pair best with.

Army and Navy Composition Ranked

Army and Navy CompositionBest ForNotes
CannonsMid-to-late game armies with strong economiesBack-row artillery that wins sieges and adds damage in the final phase of land battles.
Heavy ShipsNaval powers contesting sea controlBattle-line warships that crush enemy navies and protect trade fleets.
CavalryHordes and early aggressive expansionHigh-shock units that shine for hordes and early-game flanking before infantry catches up.
Light ShipsTrade-focused nations steering value homeCheap vessels that project trade power in nodes, the backbone of trade income.
InfantryEvery army as the durable coreThe cheap, reliable front line that holds the combat width while cannons do the killing.

S-Tier: Cannons

Back-row artillery that wins sieges and adds damage in the final phase of land battles.

AttributeDetail
Best ForMid-to-late game armies with strong economies
Key Mechanicmana and monarch points
Recommended BuildTrade Republic

See our walkthrough for the exact progression point.

Best builds using Cannons: Pairs naturally with Trade Republic thanks to how their stat scaling lines up.


A-Tier: Heavy Ships

Battle-line warships that crush enemy navies and protect trade fleets.

AttributeDetail
Best ForNaval powers contesting sea control
Key Mechanictrade node control
Recommended BuildHoly Roman Emperor

Check our maps guide for the location.

Best builds using Heavy Ships: Pairs naturally with Holy Roman Emperor thanks to how their stat scaling lines up.


A-Tier: Cavalry

High-shock units that shine for hordes and early-game flanking before infantry catches up.

AttributeDetail
Best ForHordes and early aggressive expansion
Key Mechaniccoring and overextension
Recommended BuildColonial Power

Check our maps guide for the location.

Best builds using Cavalry: Pairs naturally with Colonial Power thanks to how their stat scaling lines up.


B-Tier: Light Ships

Cheap vessels that project trade power in nodes, the backbone of trade income.

AttributeDetail
Best ForTrade-focused nations steering value home
Key Mechaniccoalition management
Recommended BuildHorde Raider

Our walkthrough covers when you can access this.

Best builds using Light Ships: Pairs naturally with Horde Raider thanks to how their stat scaling lines up.


B-Tier: Infantry

The cheap, reliable front line that holds the combat width while cannons do the killing.

AttributeDetail
Best ForEvery army as the durable core
Key Mechanicestate privileges
Recommended BuildReligious Crusader

Our walkthrough covers when you can access this.

Best builds using Infantry: Pairs naturally with Religious Crusader thanks to how their stat scaling lines up.


Progression Path

The order you should acquire equipment as you progress:

  1. Starting gear → Enough to clear Western Europe
  2. Heavy Ships → Your first real upgrade, available early
  3. Cavalry → Mid-game upgrade with good scaling
  4. Cannons → Best-in-slot, aim for this by late game
  5. Upgrade to max → The power spike from max upgrades is enormous

Practical Tips

  • Always upgrade your primary equipment before diversifying.
  • Match your equipment to your build's stat priorities for maximum scaling.
  • Never let monarch points cap at 999, spend them on tech, ideas, or developing your capital.
  • Check our tier list for how equipment rankings affect overall build effectiveness.

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