All astrological signs have a Mars compatibility. The position of Mars on someone's birthday provides information about basic animal nature, including sexuality, aggressive instincts and drive.
When two people have a compatible Mars sign, they tend to share energy levels, sexual attitudes, physical activity preferences, passions, combativeness, strengths and the things they are good at. When two people have an incompatible Mars sign, they have a tendency to get into physical fights. When it comes to romantic relationships, a minimum of one harmonious link should exist between Venus and Mars and this is most ideal when the woman is Venus and the man is Mars.