Currently, Bree has only vanilla armor which consists of leather and an iron helmet. I feel the armor would work better if it wasn't Bree specific and would be crafted in the vanilla crafting table.
The first armor set could be studded leather that would be crafted in the regular mixed armor recipe with primarily leather and secondary iron and would be one protection level better than leather. This could have the same dying abilities as regular leather armor. Next could be chain mail which would also use mix armor recipe with iron as primary and string (or leather) as secondary and would be as good as bronze. Lastly, plate armor, which would be all iron plus one wool that would add more color to it.
now for the armor implementation. first, regular and banner guards armor would vary between leather, studded leather, and chain for the torso and head. the legs and feet would vary between leather and studded leather. next would be another soldier called the armored guard that would posses plate armor and polearms (if spear also sword).
if anyone likes this I might try and make textures.