Natal Mars house is the sign where your Mars was placed during birth time, and from there other houses are calculated clock-wise.
If you were born with Mars in Capricorn, then your natal Mars house is Capricorn (Makara Rasi) and during transit, Sun forming conjunction (in Capricorn), sextile (aspect of 60° which are Scorpio and Pisces in this case), square (aspect of 90° which are Aries and Libra here), trine (aspect of 120° which are Taurus and Virgo here), opposition (aspect of 180° which is Cancer here) are discussed in this article.
Conjunction is transiting through same sign as in birth chart, sextile is transiting 3rd or 11th house, trine is transiting 5th or 9th house, opposition is transiting 7th house from natal sign.
Mars will make us take rash and impulsive decisions. Sometimes, this can lead to disputes and discord in matrimony.
Transit SUN conjunct Natal Mars : You will be highly energetic, enterprisng and daring.
Physical strength will also be good during this month.
This is good time to start new projects and establishing relationships.
Competitive spirit is high. Can convert emotional, romantic relations into physical ones.
Sexual drive will be more.
If Mars is in debilitated sign (Cancer), these effects will be less.
If this conjunction happens in fiery signs, you will get involved in disputes.
Can also become prone to accidents, injuries, infections, inflammations, fevers, cuts, wounds.
There will be restlessness to achieve power and status.
Transit SUN Sextile Natal Mars : During this month, problems will arise due to your aggressive, impulsive and inconsiderate behaviour.
If you allow instincts to control your actions, there will be serious conflicts.
Groups activities, exhibition of leadership qualities can be satisfactory. Relation with children will be good.
Good month to start any business related to engineering, instruments, manufacturing.
Transit SUN Square Natal Mars : This is not a good transit. Ego, aggressive behaviour need to be controlled.
Opponents will try to find flaws in your behaviour, preparations and blemish you.
Physical confrontations can occur.
Aggression can destroy social and romantic relationships. Over exertion can cause physical injuries.
Transit SUN Trine Natal Mars : This month can give you courage, success, adventure, confidence.
Physical fitness will increase and will be interested in outdoor activities.
Unless you are forcing yourself into any activity, success is ensured.
Ideas occuring to conscious or sub-conscious mind will be taken up as projects.
This is best time to correct imbalances from past.
Transit SUN Opposition Natal Mars : Accidents, injuries, conflicts, losses, ego confrontations, disappointments, impulsiveness, rigid opinions, lack of caution, premature conclusions are highlighted this month.
Your autocratic, aggressive behaviour will put you in difficult situations with those in power and authority.
Ego should not let you make decisions in day to day matters and emotional relationships.
Anger management should be practiced.