Necromancer – “Ruler of Erathia” [Campaign 3, Mission 5]

I stopped a couple of squares before the town, and my turn ended, and he came out on his own :)

I was also standing there. Most likely, it's about the number of troops. I had a huge army. In an open field, he had no chance. In version 1.5, I had over 80 Death Knights. Computers rarely attack those who clearly outnumber them in troops. You probably had a smaller army than mine. That's why he decided to attack.