Mars rules 12th and 7th house is in 8th house in Sagittarius

If Mars is placed in the 8th house of Sagittarius sign in a person's birth chart, it indicates intense and transformative experiences related to sex, death, and joint finances. The energy of Mars in the 8th house is known to be quite powerful and can lead to unexpected events in the individual's life.

This placement of Mars bestows the individual with a strong and passionate nature that is driven to explore the mysteries of life. They are fearless, assertive, and have a strong need for independence. They may be drawn to careers or activities that involve research, investigation or deep exploration.

However, this placement can also bring some challenges such as a tendency towards impulsiveness, recklessness, and aggression. The individual may struggle with issues related to trust and control in intimate relationships, resulting in a tendency to resist open communication and emotional vulnerability.

Overall, the key to harnessing the energy of Mars in the 8th house is to cultivate self-awareness, balance, and self-control. With the right approach, this placement can bring about transformation, growth and a deeper understanding of the mysteries of life.