I thought I good the point regarding damage efficiency and what influnces it. but i now joined a day one map, and when i compare the dmg efficiency of my troups with the one of an IA infantry stack, i struggle to understand.
both have 10inf, 70% province morale, hitpoints are 66%. my dmg efficiency is shown as 28%, AI's is 55%. wtf? 
While writing this I see that my mobilzation is at 50%. Which explains the efficiency. but why? I have no shortage of energy, so why do I get this penalty?
I ask same sort of questions,
first thought I have is are you the aggressor, did you declare war?
second thing I ask is are you entering into the AI province which would slow your mobility...
if "no" to both of these, I would send a bug report using same screen shots to get explaination...
-Hastings TNT
EN Moderator
mobilization is rising by 20% till it gets to 100%.
1st day = 50%
2nd = 70%
3rd = 90%
4th = 100%
Looks like AI has 100% mobilization form the start of the map
yes, that's the point. I must admit, I probably did never realize this though I play the game since a year or two 
i am with Austria-Hungary on a historic map. On day4 i attacked Rumania. There were no fortress.
Moral on my side around 78, on the enemyies side around 74.
I attacked rural provinces (all four with similiar result) with 12-15 infantries, defending side had 3-4 infantries. Losses were pretty same on both side!!! WHY?
At the end i attacked the capital with 22infs, 2 AC, 2 cav, defending side had 6 infantries. I lost 4 infantries, Romania lost all 6 units. Again i had expected less loss on my side!
Could anybody explain me the reason for that? I haven't played this game for ages, the mechanism maybe changed, but i could not found anything on the forum about it.
hardcoded behaviour for smaller units
they are more resistant to dmg and even after loosing 90% of troops they can still do dmg equal to 25% of original force
it is supposed to be more realistic where small defenders could hide better and kill easier masses of enemy troops
in most drastic examples you can deal 0 dmg with 50 arts or BSes to a single infantry
I had 500infs and 50cavs stopped by 2 infs as I killed just one of them, not both.
but this was 36-6 months ago. as we have a period of update abundance everything we say or write on forum could be not valid any more or the next week.
just remember to send small troops against small units. i tend to send lemmings ( attacks of single infs) against troops below 5 infs. They mostly do better than attacking with bigger force.
