Playing as Scipii I sieged Carthage, they had a full stack with 2 units of ellies, I had half a stack of general, hastati/princeps and missiles (velites and merc peltasts) I fought off their infantry on the walls and lined my forces up. They ran their ellies around by the walls en route to the town centre, I set infanty/ missiles to fire at will, both ellies went amok about 8 intotal straight through their forces who were coming from the centre to the walls, on normal unit sizes around 300 perished turning the battle to my favour. You should of seen those ellies!!