And the magic of the town portal during a battle is quite a trick. If the enemy is stronger, you fire a volley at them and then run away! It helps a lot. :D
I usually play as Order with two mage heroes, so it's just amazing. First, one slows everyone down, then the archers and spellcasters beat them up, and one mage teleports everyone, while the other casts various nasty spells like Berserk or summons illusions to attack the enemies. It helps a lot against the AI; it starts to get really confused! The enemy archers and mages are taken out quite easily, as no one can compare to the Order castle in terms of firepower – hobbits on level 1, mages on level 2, djinns on level 3, and titans on level 4.
Real problems only start in battles against another Order player who has built nagas and golems; against black dragons, titans save the day (they have innate resistance to chaos and no penalty for melee attacks) and halflings (they have increased damage at level 4, although it's weak, and usually no one pays attention to them)).