The core combat unit of the faction and the main source of damage. As long as Royal Warriors can use Baron Daemar’s life as a resource, they have no match in combat efficiency among other common units. This can even be enhanced with Sacral Priests. Because of their high life, you shouldn’t worry too much about exposing them, you can be pretty careless with Royal Warriors knowing that they are still very hard to take down.
You should summon a lot of them each game knowing that they will do the most heavy lifting, and use them as your main way to advance into enemy territory by threatening with their high attack.