Mars is the natural ruler of the sign of Aries and as such it's full power of expression is manifested when it is placed in this sign, leading to both potentially good and bad traits. With Mars in Aries you have unhibited, free flowing and impulsive energy. The energy is not restrained and flows abundantly. People with Mars in Aries will not hold back on what they want to achieve and will just go headlong into new adventures. The great advantage of ths is they are not self conscious and looking for approval from others, nothing is contrived this is natural impulsive desires let loose. The obvious problem with this lies on the other side of the coin, in that these natives may be tactless , headstrong and willful giving little thought too the feelings of others who get in their way. Thisis unlikely to be a conscious decision more that they just don't notice the wishes of other people as they are so focused on pursuing their aims. This combination is truly the sign of the warrior, a powerful strong energetic leader with plenty of fire and energy. It can also be the sign of the soldier or great sportsman who revel in the heat of the battle.