EU4 Army Composition Spreadsheet (Europa Universalis 4) (2024)

Table of Contents
Combat Width Artillery Cavalry FAQs

This article is a comprehensive guide focused on unit composition in the strategy game, Europa Universalis 4. Whether you’re a beginner or an experienced player, learning more about the game’s mechanics is essential for strategic success. The Europa Universalis Guide offers practical advice and strategies that will help you hone your gameplay. It’s an all-encompassing guide intended to refine your understanding and tactical use of different units within the game. Let’s dive into the Unit Composition Guide for EU4 to elevate your gameplay strategy.

Military TechnologyCombat WidthNum. InfantryNum. CavalryNum. CannonsTotal Units

Combat Width

An important consideration in unit composition is the Combat Width, a feature visible on the military screen of your country’s interface. The Combat Width reflects the number of regiments that can simultaneously engage in combat. Advancement in-game allows for an increase in your Combat Width. This is made possible by unlocking Military Technology, a key upgrade that enhances your Combat Width. It’s also vital to remember that the effectual use of Combat Width becomes an important factor that shapes your battle strategies, due to its direct influence on the outcomes.


Artillery units, uniquely capable of attacking from the back row, must be strategically positioned behind the infantry to maintain their efficacy in combat. While situated on the back row, they deliver decreased damage compared to their potential on the front line. However, placing them on the front row renders them vulnerable, incurring them an additional 50% damage. The fall of the infantry, leading to the advancement of artillery to the front row, precipitates a quick loss due to the escalation in damage artillery units receive.

EU4 Army Composition Spreadsheet (Europa Universalis 4) (1)


Cavalry units, on the other hand, tend to fall short of expectations in the later stages of the game, a matter better discussed in later sections of this guide. The contentious issue comes into focus when considering the cost of cavalry, which is a staggering 2.5 times higher than that of infantry. Despite this prohibitive cost, an interesting trend of cavalry overuse has been observed within the game’s community. This paradox might be linked to particular bonuses, or perhaps certain exclusive abilities that these pricier units possess.

EU4 Army Composition Spreadsheet (Europa Universalis 4) (2)

When starting out you should still use cavalry but it’s best to ditch them at around Tech 10. Put your artillery at the back and infantry on the front row. A full Combat Width cavalry is useful for a short time during the early stages of the game but once the units on the flanks are defeated that cavalry will be left out and won’t be used. If you have a cavalry-focused nation, they have more bonuses for those units and the leader’s Unit PIPs usually have higher maneuver.

When in combat your units are reinforced by the back row, so if your Combat Width is 16 and you have 20 thousand soldiers ready for battle 4 thousand will be in the back row. When a unit ahead of them dies the reserves move forward to replace them. When you get Tech 5 update your Military Template to the 24,4,0 template now that your Combat Width has increased. You can change to this and any others by going to Conform to Template.

EU4 Army Composition Spreadsheet (Europa Universalis 4) (3)

The Shock Damage cavalry does is superior to infantry, and they deal good flanking damage. A decent composition at the start of the game is 12 infantry, 4 cavalries, and 0 artillery. All battles go through 3 phases alternating between Fire and Shock. Fire Phase is first which represents ranged attacks such as longbow, artillery, muskets going first. The shock Phase is next which is hand to hand combat, these battle phases will continue until one side has no more moral and discipline and they retreat.

An ideal Army Composition is to have all infantry at the start of the game since cavalry costs a lot. The first round of artillery you unlock they’re not very good but are useful and when sieging they’ve extremely useful. Keep up to date with your Military Templates and bring multiple of your armies together (stacking) to create a larger force but by doing so you will get more attrition. By splitting the army before and after a fight you will get less attrition; no one wants that to be high.

With that, we wrap up our comprehensive guide on EU4 Army Composition. This concluded look highlights the key aspects of unit effectiveness such as Combat Width, situational unit choice, and Military Tech level. Balancing infantry, cavalry, and artillery by considering costs and strategic application can greatly influence your military performance in Europa Universalis 4.

EU4 Army Composition Spreadsheet (Europa Universalis 4) (2024)


What is the composition of the land unit in eu4? ›

The basic unit of land forces is the regiment, each consisting of 1000 soldiers at full strength. Each regiment is classed as Infantry, Cavalry or Artillery. Regiments are grouped into armies. Each army can be led by a general or conquistador.

How do you get a stronger army in eu4? ›

For buffing your armies, morale and discipline are the main factors. Early game morale is more important. The higher your morale is the longer your army will be able to keep fighting, if you outlast their army then yours wins. Early game morale is pretty low all around, so bonuses to it count for more.

What is the cavalry to infantry ratio in eu4? ›

The base ratio is 50 percent, so an army with 22 units of infantry shouldn't have more than 11 units of cavalry.

What is the richest area in EU4? ›

Holland to Netherlands or Malaya or Kilwa run all starts pretty good and ends as the richest without much sweat. England, Castille/Spain and Portugal are other choices.

Why is cavalry better than infantry in EU4? ›

Cavalry is good for flanking once the main line has been filled, but are much more expensive than infantry. All cavalry have 2 pips in maneuver. Cavalry costs 2.5 times as much as infantry. They are more powerful than infantry, especially during the shock phase of combat.

What is the hardest nation to play as in EU4? ›

Often cited as a classic example of a challenging nation in Europa Universalis 4 gameplay, Karabakh begins as a vassal of Qara Qoyunlu. Should players want any hope of expanding into its neighboring regions, Karabakh should secure support for its independence or risk being diplomatically annexed.

What is the strongest AI nation in EU4? ›

For the A.I the ottoman empire is the strongest nation in the game and the hardest to deal with for other A.I nations. In the hands of a player the Ottoman Empire can be made very very powerful but Russia definitely in the hands of a player is the strongest nation in the game.

Why can't I recruit Marines in EU4? ›

Marines can be recruited from the macrobuilder (once unlocked via idea/tradition etc.) and they use 1,000 sailors per regiment. Their recruitment time and cost, as well as maintenance cost is identical to regular infantry regiments. Available only with the Rule Britannia DLC or the Golden Century DLC enabled.

Why does cavalry beat infantry? ›

Cavalry had the advantage of improved mobility, and a soldier fighting from horseback also had the advantages of greater height, speed, and inertial mass over an opponent on foot. Another element of horse mounted warfare is the psychological impact a mounted soldier can inflict on an opponent.

Do tanks count as cavalry? ›

After the First World War cavalry units were mostly converted from horses to either armoured cars or tanks which became known as either mechanized cavalry fulfilling a reconnaissance role, or armoured cavalry serving in the offensive role that seeks to break through the enemy defences.

What unit is best against cavalry? ›

Infantry blocks cavalry charges; Infantry has an advantage over Cavalry, Archers shoot infantry; Archers have an advantage over Infantry, and Cavalry is so fast that they are so difficult to hit, that they are able to charge and reach archers.

What is the width of the units in EU4? ›

The base combat width is 15. As military technology advances, a country's combat width increases, allowing them to use more soldiers effectively at once. All countries other than Native Americans start with tech level 2 or 3, so their starting combat width will be 20.

What determines PU in EU4? ›

A personal union is a form of diplomatic relationship where one monarch rules over two nations. It can be formed by having a royal marriage with a country whose monarch dies without an heir (usually of the same dynasty).

What unit do they measure their land in? ›

Acre. The (English) acre is a unit of area equal to 43,560 square feet, or 10 square chains, or 160 square poles. A square mile is 640 acres.

Is EU4 realistic? ›

EUIV being a sandbox game is as accurate as it can be at the start of the game. However, as you continue with the game further into the timeline a divergence can occur from a historical accuracy standpoint.

Top Articles
Latest Posts
Article information

Author: Foster Heidenreich CPA

Last Updated:

Views: 6116

Rating: 4.6 / 5 (76 voted)

Reviews: 83% of readers found this page helpful

Author information

Name: Foster Heidenreich CPA

Birthday: 1995-01-14

Address: 55021 Usha Garden, North Larisa, DE 19209

Phone: +6812240846623

Job: Corporate Healthcare Strategist

Hobby: Singing, Listening to music, Rafting, LARPing, Gardening, Quilting, Rappelling

Introduction: My name is Foster Heidenreich CPA, I am a delightful, quaint, glorious, quaint, faithful, enchanting, fine person who loves writing and wants to share my knowledge and understanding with you.