Mars

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Mars is the Roman god of war and one of the chief deities of the Roman state, later lent to the red planet that still carries his name. The Greeks had Ares, a god of battle’s fury whom their own poets distrusted; when Rome matched its gods to theirs, Mars was set against him. But the equation was never exact. Ares is the violence of war stripped of glory, disliked even on Olympus; Mars is something graver and more respectable — a protector of the city ranked among its foremost gods, just below Jupiter in the archaic triad, with a priesthood, a feast-calendar, and a month that still bears his name.

The Romans traced their own descent through him: Mars was held to be the father of Romulus and Remus, and so of Rome itself, which made the god of war also a god of the founding. His oldest aspect seems to have been agricultural as much as martial — a guardian of fields and boundaries invoked at the turning of the season, before the warlike face came to dominate. His festivals clustered in spring, the campaigning season’s opening; the Campus Martius, the field of Mars outside the city walls, was where the legions mustered. His animals were the wolf and the woodpecker, and the priests called the Salii danced through the streets in his honour bearing sacred shields.

The planet entered the picture through the long Mesopotamian and Greek work of naming the wandering stars after gods. Its red colour fixed the association with blood and war, and in the astrology that Rome inherited from the Hellenistic East, Mars became one of the seven classical planets — read as the maker of strife, courage, surgery, and fever, the “lesser malefic” whose influence was held to be hot and dry. Medieval astrology bound it to the choleric temperament: the quick, hot, angry humour. Alchemy carried the scheme further, assigning each planet a metal; Mars governed iron, the metal of weapons, and its alchemical sign and the planet’s became one and the same. That sign — a circle with an arrow rising from it — is the one biology later borrowed for the male.

What the tradition holds and what history can attest pull apart here. The cult of Mars at Rome is documented fact, recoverable from inscriptions, calendars, and the antiquarians who recorded the old rites. The planetary correspondences are a different kind of claim: a system of meanings, elaborated over centuries by astrologers and alchemists who took the heavens to be legible and the metals to answer to the stars. The thread that runs through all of it is the single image of hard, hot force — the god who guards by destroying, the planet that burns red, the iron that arms the hand. The name held; what it meant shifted each time it was inherited.

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