For basic units you need at least 25%, for medium unit is is 50%, for elite units it is 75%, and for some unique units it is 85%. To be able to recruit units in a settlement, you must first convert its population to your religion. Some buildings provide morale, exp, or weapon bonus. Most units can also upgrade their armours. Therefore, you need to be actively upgrading your barracks to gain access to the most elite units. There are huge differences between the weakest and strongest units. The units stats were completely rebalanced. You can recruit better units typically only from castle barracks, cities usually provide just lower tiers, and no cavalry. Overhauled recruitment is one of the main features of this mod, understanding it and using it to its maximum is imperative for winning. This thread by no means serve as a full list of mod features of the Unofficial Patch for TES:TW, for that see the official lengthy release article/changelog, but rather as a guide to provide you with more information about specific unique features of the mod and how they work, overview of the events, and also a deeper knowledge of the factional features, i.e., what maks each faction/race different towards the other factions, and of the factional lore in a context of the mod.
