Mars in general:
The red planet Mars is fiercely dynamic and action-oriented. It represents the raw force and drive behind every action an individual makes. Originally named after the ancient Greek god of War, early astrologers were quick to observe Mars' connection to all forms of conflict, aggression and strife.
Mars is the ruler of both interpersonal, and internal conflicts -- ruling both the expression of personal energy and the aggressive side of human sexuality. The specific kind (or "color") of energy that we express is determined by the elemental nature of the sign of the chart that Mars is in, and is colored further by the general traits of that sign.