So, lets see what Mars can do in 8th house without any conjunction or aspect from any other planet. 1st lets see what these 2 things represent -
Mars represents our will power, courage, ability to take actions, aggressive nature, anger, our fighting ability, brother, male friends, a boy friend for a girl, a soldier, an athlete and real estate etc.
8th house is house of secrecy, occult knowledge, death, transformation, death and re-birth, In laws family, joint wealth with spouse etc.
Another Mangalik position, so proper care should be taken regarding conditions related to Mangalik Yoga - http://astrosaxena.com/mangalik .
So, these are the real courageous people of the world. Born Fighters, as 8th house is considered as the most chaotic house which represents things like death, sudden events like accidents, secrecy and like things and Mars represent courage, will power to fight against all these things. So, these people become fighters, soldiers, "Great Astrologers", Occult Practitioners, Mystics etc. Even if they don't take any of these professions, their daily routine life is filled with much of struggles and fights. Mars here gives loads and tonnes of courage to fight through all the struggles of life.
From 8th house, Mars aspects the 11th house of earnings and they can have dominating approach towards making more and more gains.
Mars next aspect goes to 2nd house of Family and gives an environment filled with aggression, dominance and anger in early childhood.
Mars next aspect goes to 3rd house of efforts and it can give them fluctuating interests as to which area of life they should put efforts in.
Next, Mars in 9th house.
Vishal S Saxena - Astrologer