Something they were unable to do previously. So for example, The Dutch and Swedish factions can now access the Hussars unit. We’ve also given several factions access to units that are already in the game. So, as an example where you get a standard guard unit across all factions, several factions will now have their own unique version, with unique uniforms and attributes (Like reload time and morale etc.). These units will give individual factions a more unique feel on the battlefield and less of a generic army.
Some of the generic units in the game will be replaced with faction specific special units. The new units are a combination of new and replacement units.