Size Factors

This article explains the concept of size factors and how they differ between unit types.

When playing Supremacy 1914 you want to be smart about army composition and how to group them into armies. One major reason for this is the size factor feature.


When an army reaches a certain size, each additional unit of the same type added to the stack only adds a fraction of its damage to the total damage of the army. Size factors are written in this fashion:


a0=1, a25=0.5, a50=0


The above example means that starting at 0 units each additional unit adds 100% of its damage. But starting at 25 units each additional unit only adds 50% of its damage. Finally, starting at 50 units each additional unit adds 0% of its damage to the total damage of the army. This is why splitting up armies often is a good strategy for maximizing damage output.


Here's an overview about all units and their respective size factors:


c3ecbe1fd2b0647ddb7e85e341bdd652.png Infantry a0=1,a5=0.3,a15=0.1,a40=0
ff1f878a5f259fc98bd73f9f6e11fb13.png Artillery a0=1,a50=0
3fdc3c204dd0d1bc376a6f263826925f.png Tank a0=1,a5=0.6,a10=0.3,a25=0
85f02a83ab57a2bd4aa6c3e4bf6021b9.png Railgun a0=1,a50=0
5eaaceba309325a30022aa4e0bdb2c52.png Battleship a0=1,a50=0
8db73a245f7a96cd880d67e483e3a05c.png Submarine a0=1,a50=0
cbdbcf200efa4e6cc40c4535691b8de0.png Balloon a0=1,a50=0
507eb4002e1a7e47ea98d4229b92b38d.png Fighter a0=1, a15=0.8, a25=0.6, a35=0.4, a50=0
4bb65c82ca6479b2c1b914d9017eff3e.png Armoured Car a0=1,a6=0.6,a15=0.2,a25=0.1,a40=0
7162ad1815954e9ef461a98fd975cdaa.png Light Cruiser a0=1,a50=0
208d2ea696a931f7f3dd8fa1adcdb1e0.png Bomber a0=1, a15=0.8, a25=0.6, a35=0.4, a50=0
27f71466effb74e745e86afa568437d2.png Heavy Tank a0=1,a5=0.5,a10=0.2,a25=0
9b3f23ecfdb99e46dd0ef377c37ecee5.png Cavalry a0=1,a6=0.6,a15=0.2,a25=0.1,a40=0

    Comments 31

    • If i get this right doing 2 stacks of 15 against a city whit 1 stack of 30 the 2 stacks should win right?

      • No, as the stack with 30 can defend against both stacks with 15

      • But of somone send 1x30. What it can be?

    • How is damage divided between different unit types in each stack? Exemple: 5 artilleries, 50 infantries, 1 horse ,1 Armored car, 1 tank, 1 heavy tank and 1 plane?


      Any priorities? How do they share incoming damage?



      Thank you

    • Well, I understand how important to split your armies into stacks based on, let's say 50 infs. I also see from the comments, that it's important to use other units of all types in stack to strengthen both attack and defence. Can you guys suggest your variants of more or less ideal stack? I would better say, a balanced multi-purpose stack, not too weak, not too expensive?


      Let's say I have 50 inf / 5 cav / 5 am / 1 bal / 3 art / 1 t / 1 ht.


      Can you please suggest more suitable variants from price/quality perspective?

      • Dzmitry, happy are you involved with the Forum, I suggest you go to http://bit.do/S1914 and use the BOT indicator tool/chat which this server has available to figure out the best mix of stacks and the cost/time used to build your stacks.


        Kind Regards, Hastings TNT

      • hello Hastings,

        The link that you posted is not working. Is this indicator available anywhere else? This is a very important tactical issue, stacking.

    • if you attack with 2 x 20 stacks and the defender has 30, does each 20 stack face a defensive attack or just one defensive response per hour/15 minutes?

      • if you attack- enemy is defending. so every stack of 200 will be hit by defense value of fort's 30 units

    • So you can only have 4 infantry in a stack before getting a severe penalty? That's duuumb. It should be set like the example for infantry....up to 25 infantry before you start incurring a penalty, and at that point it should drop to only .5 damage. The example rates are what it should be for the infantry. What is currently listed for infantry is far too restrictive and annoying.

      • is is not the best representation- 5 infs = 6 dmg, 7 infs = 6.3

        for morale 100% ofc


        so from 1-5 - max dmg

        for 6-15 - optimal dmg

        16-40 minimal dmg

        51 ++ - lost dmg

    • My question about this has always been, say a stack of 40 vs 60 vs 80 troops. Which is better. I think the 40 would be inferior because it would drop below that optimum level after the first lost. 60 would keep you at that level longer. 80 even longer but with 80 would the extra troops sustain damage that is not necessary. Does a stack just need to be big enough to stay above 40 until you can reinforce it ?

      • One thing is the damage and another is the force that means "resistance" in this context.


        Of course, 80 troops is better than 60 troops, and those are better than 40 troops. However, as the article suggests, 40 troops plus some cavalry, tanks and armored cars would make more damage and could beat a 80 troops' army because more soldiers doesn't mean more damage.


        That's important to know because, for example, big armies groups can be obliterated as far as the enemy can keep the melée and send constant stacks of units with different features.

      • The article talks about maximising damage only. The part about the group taking casualties is another story. But yes, it is preferable to have more units so the damage is used in the most efficient way :D

        So maybe, get a 50 stack artillery and let them shoot, then get a separate 50 stack artilery to do damage again! If you are worried the enemy will focus on these artillery, simply just add a few artillery in the group so they still do maximum damage.

      • I think the point is to 'MIX' your stack with several other unit types...this is going to do max damage, remembering that each unit = 1000 < so the battle front can only be so wide when attacking a fort, and this is reason for cap on damage any stack can do,.


        Hit Points is part of the dispersion of damage which is done, 60 inf units when cap of damage is 40, perhaps 10 units die and are replace in next tick of melee and your stack is down to 50 inf but still doing max cap of damage of 40


        Keeping a Mixed stack of inf, cav, arty,balloons, tanks you are dealing more damage and your damage taken is dispersed.

      • to make it simple 50 inf units = 12 dmg

        40 + 10 = 12 + 7.5 dmg = 19.5 dmg


        3 * 15 + 5 = 27 dmg + 6 = 33


        10 * 5 = 60 dmg



        but the smaller the attacking unit, the faster it goes down against defender who deals defensive blows to anyone who is attacking so it may turn out that al l10* 5 attacks will deal max possible dmg but all of them will be wipe out by defender

      • But how do you split them to fight a fight. When I use delay they simply fuse few min. later.

    • Que sucede con la artilleria ? A partir de 50 unidades de artilleria el daño no es acumulativo?

      • No suma en absoluto. Harás el mismo daño con 50 artillerías o con 1 000.

    • is that 25 units of each or 25 units total?

      • each number is how many units can be in one stack on whatever type of unit before they don't do any more damage

    • This makes no sense

      • this pretty much just tells you how many units of one type can in a single stack before they don't add anymore damage

    • What about armored cars?

      • a0=1,a6=0.6,a15=0.2,a25=0.1,a40=0

        Armored Cars