Final answer:
In Babylonian mythology, the god Marduk fights an army of demons led by Tiamat, representing order defeating chaos.
Step-by-step explanation:
In Babylonian mythology, Marduk is called upon to fight an army of demons led by the goddess Tiamat. Marduk, being the patron god of Babylon and possessing great power, was considered the chief deity who presided over all aspects of human life and the cosmos. Tiamat, in the mythological story known as the Enuma Elish, represents the chaos of primordial creation and seeks to destroy the younger gods, leading Marduk to battle and ultimately defeat her, establishing order.