Hello, about a night ago me and Kiergath looked at making custom formations, took us a few hours but at least we got it working. We will be looking at 3 files here, or 3 locations, whichever you prefer to call it. dmscript.global - located in \Steam\steamapps\common\Cossacks 3\data\scripts, dictates what limit the formation has, for example a limit is set to 55 (or around that number) men in a single line, meaning that a 3 rank line formation of 180 men (60 men per line) would bug out, soldiers would either be left on the spot and not joining the formation or continue on their marry way to where they were ordered before the order to form a line. formations.cfg - located in \Steam\steamapps\common\Cossacks 3\data\game\var, dictates the form of the formation, for example, the 196 man line formation had 5 ranks in it, you can make it into 3 from there, however, mind the limit of men in a single line set in the dmscript.global file or the formation will bug out. I suggest searching for the specific formations for example "196" or "120" to see how they're represented, but in general stars (*) which are made by pressing shift plus 8 at the same time on your keyboard, present the unit, be that an infantry unit, ship, or artillery, while the dot (.) represents an empty space. In order to make a new formation just copy and paste another one which was already done and then customize it to your liking. Example of a customized 4 line 400 man formation, each line consists of 50 men each - country.script - located in \Steam\steamapps\common\Cossacks 3\data\scripts\lib, the final file or location we will need in order to make custom formations. Search for "LINE196" in the said file to find where you need to go to list your custom formation(s). There are 2 of these parts there listing 17th and 18th Century formations separately. I made a custom 300 formation by adding 'LINE300', between 'LINE196', and 'LINE400',); Same goes for the other 2, SQUARE300 and KARE300, you get the point. However, you will also need to list the new option above this part. There are 5 options by default for infantry formations in "procedure AddOfficersFormationInf" Listed as m0, m1, m2, m3, m4. In order to list your new formation just add ,m5 at the back of m4. Simple as that, however, there are 2 places where you will need to add these additional listings in each century's formation so be careful as failing to do so will make the game start with a blackscreen, meaning you messed something up. Final product, 300 man formation in a square - TL;DR version: dmscript.global - Formation limits. formations.cfg - Formation forms, 3 ranks, 4 ranks, etc... country.script - Listing available formation options, the above 2 will not cause you a blackscreen, however, messing something here up will cause your game to blackscreen, so just be careful. Cheers. Another thing I wanted to do with formations was give them advanced abilities like fire by rank, fire and advance, possibly platoon fire and so forth, as well as make the first 2 lines crouch before the 3rd line fires, like in Empire and Napoleon Total War, I had an idea of using ("attaching" actually) the peasant crouch while building animation for this. Adding reload animations would be even better for full immersion. Another idea thrown at me by a friend of mine was mixed formations with pikemen and musketeers however that would probably require coding knowledge that's out of our reach for now.