I gotta say i've enjoyed this one. The atmosphere really conveys that feeling of urgency and looming danger. I chose to leave my men behind at the first castle hoping to defend it. The moment i saw the sheer difference in number between us and the enemy, the weight of the incoming attack became clear.
If i were to complain about something, it would be that the game might be just a bit too easy to win. I feel like the feeling of despair would be much better delivered if victory was extremely hard to achive. The sense of hopelessness would make the eventual succes that much sweeter.
Overall, a very nice submission.