This mod is a horse and warhorse upgrade requirement waiver for all factions, which allows you to play with your preferred faction without the need to upgrade your units to the maximum level. The only requirement is to have your units available in the starting roster.

So, to remove the horse upgrade requirement, you need to install this mod in your game. The best way to install it is by downloading it from the website.

This mod is intended to be used with ALL FACTIONS, not just a certain one.