A free mod for Mount & Blade II: Bannerlord, by Skullblade982.
A mod inspired by the Medieval period of history.
This mod is made to help you get a better understanding of the troops that were used before.
My Little Warband The Holy Roman Empire is an excellent tool for that.
It is made in such a way that it can be used for all versions of the game.
In order to import the files, you need to go to your game directory and find the folder that has the import XML file in it.
After you have found it, you need to open it and import the files.