Basically everything
>>50266590 said
But I would say that the game could've been made a lot better if each kingdom was more than just one area/battle. I don't count the areas where you can find wild Pokemon obviously.
What im thinking is that you'd fight further into their territory, maybe taking lesser forts governed by the junior warlords, until you're finally at the gates of the warlords castle and THEN the shown for the fate of their kingdom begins.