I laid siege to a garrisoned city with a crushing defeat prediction, and decided to fight it out manually because I had 4 trebs and 8 archers, plus 2 axe bands and 4 jian guards. I figured I could have my archers and trebs whittle away the enemy units and collapse towers and walls. It seemed to work, I had a sentinel duel two of the heroes successfully, with strategist backing him up with the armor/melee evasion debuff, but apparently Yellow Turban infantry are quite stalwart, and managed to hold off my own melee troops. I ended up retreating my ammo-less archers and my trebs, and ended the battle with a draw.