The Ensign. Carries a flag that provides a 0.5 defence bonus to units adjacent unless they have 0 defence (like catapults).
This would actually make sense for this branch as it is all about organisation, and the sub-branch (shields) is about defence. This unit fits both those themes. We also don't have a buffing unit yet so this would be a cool one.
Nice idea! I think a new unit called 'Royal Guard' could be included (possibly) a unit that has increased stats when fighting within the captial perimeter or somthing similar... Also maybe allow the construction of 'City Walls?' (12 Stars)