Hello again.
So i repeated my test several times and results are... far to random to judge anything.
Setting: Alpine Pass,
Units: on both sides Line Infantry (Piechota) of Poland-Lithuania.
Player: I set them to three ranks deep before battle starts.
Playtrough: advancing immediately after battle starts towards enemy, fire at will disabled. Advancing till about half the max fire distance - switching fire at will on just before unit stops. BAI in this setting always starts to shoot at max distance (minus time needed for them to prepare). Usualy this result in one man lose to my unit. After that, things are getting to be very random.
I had one battle in with it entire lenght I've reduced they numbers only by 10, while they reduced me to 159 from 200 (breaking my unit). In another one, with fairly same setting (of course not exactly due to slight changes to distance traveled and exact point in the field) I've won.
If I can speak of any kind of regularity, I've noticed that usualy my first rank salvo do not deal any damage (depicted) at all. Another thing - It looks like for very short time, but my unit effectiveness was growing midbattle (and then dropping again). I think this might be due to combination of terrain and how lose of accuracy due to lose of cohesion works. I (only) suppose, that while soldiers target less accurate, projectile spread might become paradoxically more in my favor for the short time in this given setting.
Among those several trials I've repeated result with no casualties at all (with first three salvos of fire by rank drill) once.
Btw. I've noticed that grenadiers have ability to throw grenades, but I was thinking this is disabled in imperial splendour, isn't it?
How are difficulty settings works in your mod - do they simply increase morale and other bonuses for enemy, like it was in vanilla game? Or do something else?