Unequal Confrontation

I'm playing through your map as a Barbarian. It's the middle of the second month – Humans and Dwarves have been eliminated. No bugs have been found. Your scenarios have a unique style. You can't relax; you need to carefully plan your strategy. The Dwarves are indeed quite agile and caused some trouble, but within reasonable limits. However, I have a question about the Orc: at what point in the game did you fight him? I didn't want to prolong the game and explore the entire map, gathering troops, but the Orc, with a single wave of his army, destroys 58 mages at a time. He has enough mana to obliterate me and do so without the involvement of his army, and I don't have time to significantly reduce the number of enemies at this stage of the game.

And another question – is the Orc's army constant over time?