Mars gets exalted when it is placed in the sign of Capricorn, which means that Mars gains great strength when placed in the sign of Capricorn. Hence retrograde Mars in the eighth house of a horoscope can give strong positive or negative results when placed in its sign of exaltation, depending on its working nature and the overall tone of the horoscope under consideration.
Benefic retrograde exalted Mars in the eighth house of a horoscope in the sign of Capricorn can bless the native with good results related to marriage, profession, fame, authority and many other types of good results depending on the overall tone of his horoscope. Such benefic retrograde exalted Mars can bless some natives with many types of positive results through their marriages, when it is present in harmony with marriage favoring planets in their horoscopes. Benefic retrograde exalted Mars in the eighth house in the sign of Capricorn can bless some natives with life partners who may be rich and these natives may come across many benefits by virtue of such marriages. For example, if benefic retrograde exalted Mars is placed in the eighth house of a horoscope in the sign of Capricorn along with benefic Venus, benefic Jupiter is placed in the first house of this horoscope in the sign of Gemini and benefic Moon is placed in the fourth house of this horoscope in the sign of Virgo along with benefic Saturn, the native may receive this benefit. The native benefitting from benefic retrograde exalted Mars in the eighth house in the sign of Capricorn and other benefic planets may get married to a woman who may belong to a rich family; and the native may profit through this marriage in many ways.
The favorable impact of retrograde exalted Mars in the eighth house in the sign of Capricorn can also render benefic professional results to the natives benefitting from it, when joined by profession lifting planets in the horoscopes of these natives. Such benefic retrograde exalted Mars can render posts of authority in the house of government to some natives under its influence through jobs or through politics and these natives may achieve such authority as army officers, police officers, air force officers, judges, doctors and many other types of professionals. For example, if benefic retrograde exalted Mars is placed in the eighth house of a horoscope in the sign of Capricorn, benefic debilitated Jupiter is also placed in the eighth house of this horoscope, benefic retrograde Venus is placed in the third house of this horoscope in the sign of Leo, benefic Rahu is also placed in the third house of this horoscope along with benefic retrograde Venus; and benefic Ketu is placed in the ninth house of this horoscope in the sign of Aquarius, the native may join the army. The native benefitting from benefic retrograde exalted Mars in the eighth house in the sign of Capricorn and other benefic planets may get selected for a post of authority in the army and he may enjoy success and recognition as an army officer.
At the same time, if benefic retrograde Mercury is placed in the third house of this horoscope in the sign of Leo along with benefic retrograde Venus and Rahu; and benefic Sun is also placed in the third house of this horoscope in the sign of Leo along with these three benefic planets when all other planets are placed in the already mentioned houses of this horoscope, the results may improve a lot. The native benefitting from benefic retrograde exalted Mars in the eighth house in the sign of Capricorn and other benefic planets may achieve success in competitive exams for selection in the army and by virtue of such success; he may get selected for the highest possible direct rank in the army. The collective influence of such benefic retrograde exalted Mars and other benefic planets can bless this native with very good amount of success and recognition through this field of profession and he may enjoy a wonderful career as an army officer. Apart from this, benefic retrograde exalted Mars in the eighth house in the sign of Capricorn can bless the natives with success, fame and authority through many other fields of profession, when working in harmony with profession favoring planets in the horoscopes of these natives.
On the other hand, malefic retrograde exalted Mars in the eighth house of a horoscope in the sign of Capricorn can trouble the native with problems related to marriage, profession, health and many other types of problems depending on the overall tone of his horoscope. Some natives may feel the heat of such malefic retrograde exalted Mars in the sphere of their marriage due to which they may have to face many types of problems related to this field. Malefic retrograde exalted Mars in the eighth house in the sign of Capricorn can delay the marriages of some natives and this problem may aggravate with the addition of other negative planets to the horoscopes of these natives. In an extreme case of this type when supported by other malefic planets, malefic retrograde exalted Mars in the eighth house of a horoscope in the sign of Capricorn can delay the marriage of the native till his age of 48, unless there is a strong marriage promoting planet in his horoscope.