Zaos and many other soldiers stayed on some wagons on the back of the group that was running away. They were ready for battle, but they were only lookouts even though they saw the enemies in the distance. They weren't planning to start a fight anytime soon after the first failed attempts.
Although Zaos was ready for some action, the wound on his arm still was bothering him. Taking the steel arrow from his arm had been even more painful than when he was hit. Still, even though he used Heal several times to close the wound and even prevented a lot of blood from being lost, it seemed that the arrow damaged his circulatory system. That wasn't something that magic could heal as fast as ordinary wounds.