I really shouldn't, but if it helps Spoon - that province is worth over £700/turn. The defences are consummate.
Also, you can upgrade wounded troops you just can't use them until the turn after because they still need to heal.
I think I'll rule that you can upgrade and use healthy troops on the same turn, though. It's not the same as training them from scratch.
Try boosting your economy for a bit spoon, then you can make a better and larger army. Spamming spearmen isn't being real efficient and you are taking heavy losses. God help you if the game develops internal politics based on your past actions. You could be overthrown!
I considered that, but that would just be unduly harsh. Internal revolutions are a fluff matter as far as I'm concerned - the player will always have control, but the 'leader' might change.
So we'll eventually be getting flying units one way or another. Toying with how to do this, whether to just be a movement advantage or give them a significant tactical advantage.
One way I can see of doing this would be to give melee flying units a bonus vs ground-based melee units (hit 'n' run, or just pick them up and drop them), ranged flying units immunity vs ground-based melee units (stay out of range and fire downward), and make ranged ground units able to attack flying units without penalty. What do we reckon?