As the God of Israel Yahweh becomes its leader and champion in war; he is a warrior, mighty in battle; but he is not a god of war in the specific sense.
In the religious system of Numa, Quirinus and Mars were both recognized as divine beings, distinct but of similar attributes and functions; thus, like Mars, Quirinus was at once a god of war and a nature god, the protector of fields and flocks.
Portrayed in hymns and myths as a god of war and pestilence, there can be little doubt that Nergal represents the sun of noontime and of the summer solstice which brings destruction to mankind.
The addition of Nergal represents the harmonizing tendency to unite with Ereshkigal as the queen of the nether-world the god who, in his character as god of war and of pestilence, conveys the living to Irkalla and thus becomes the one who presides over the dead.
The modern name is derived from Mexitli, one of the names of the Aztec god of war Huitzilopochtli, which name was later on applied also to the Aztecs themselves.