[quote=@The Captain]
So in the casein population and military numbers I'm going to assume the demographics of the high European middles ages would be a fair analogue? Post-Black Death/Famine? And then also accounting for prolonged warfare?

I was aiming for a population of around 6 or 7 million and a possible levy of around 10,000. The military itself would be largely composed of veterans and 'professionale' (by trade and necessity). I'm still aiming to make an independent, resistant kingdom, on that note. One that's probably on its last legs and contending with an apparently hopeless war, famine, and a swelling refugee population.
[/quote]

That sounds good. we'll be using the high middle ages as an analogue for population, probably not post-black death since we are in the midst of our worlds "black death" equivalent. You can up your numbers a bit from what you proposed.

A resistant nation sounds good, I look forward to seeing what you come up with.