How the effort works
Effort here is immediate and undiluted. There is very little gap between deciding and moving, which makes this Mars excellent at starting and considerably worse at the middle third of anything. Energy arrives in bursts rather than as a steady supply, and the bursts are genuinely powerful while they last.
Because Mars rules Aries, none of this is being filtered through a sign that wants something different. What you see is the planet operating on its own terms.
What the anger looks like
Anger is fast, loud and short. It arrives fully formed, gets expressed, and is generally over before the other person has finished being upset by it — which is the central problem with this placement, since the discharge is complete on one side and not on the other.
This Mars very rarely holds a grudge and very frequently leaves damage behind that it has genuinely forgotten about.
Attraction and pursuit
Attraction is direct and pursuit is immediate. What this Mars wants, it says. The appeal is that there is no ambiguity; the cost is that the pursuit can be finished before the other person has caught up with the fact that it started.
What actually helps
The useful correction is not restraint, which does not hold, but sequencing: put the first burst somewhere that benefits from it and build a structure that survives the drop afterwards. Anything requiring sustained effort should be started by this Mars and finished with help.
The other correction is repair. Because the anger clears so completely, this placement consistently underestimates what it left behind, and going back to check is a learned behaviour rather than an instinct.
Why the dignity is what it is
Mars rules Aries, which in the traditional scheme means the planet is operating in the sign built to its own specification. Cardinal fire initiates and Mars initiates, so nothing here is being translated.
Rulership is worth understanding correctly: it does not mean the placement is good, it means there is no friction between what the planet wants and what the sign supplies. A ruling Mars is undiluted, and undiluted is only an advantage when the direction is right.
Against the opposite sign
The Aries–Libra axis is starting against sustaining, and Mars sits on it more starkly than any other planet because it is measured in what gets done rather than in how someone feels. Mars in Aries straight at It, Immediately; Mars in Libra drive that runs through negotiation; slow to act alone and effective with a partner.
What Aries finds hard is what Libra does without thinking. A Mars in Aries that keeps running into the same wall is usually running into the absence of what Libra supplies without trying, and the useful borrowing is that specific thing rather than the whole temperament.
Questions people ask about this
Is Mars in Aries aggressive?
Anger is fast, loud and short. It arrives fully formed, gets expressed, and is generally over before the other person has finished being upset by it — which is the central problem with this placement, since the discharge is complete on one side and not on the other.
What does Mars in Aries mean?
It describes how you pursue what you want and how you handle conflict — not what you want, which is Venus and the Sun.
Why is Mars in Aries in rulership?
Dignity names the fit between planet and sign, not a grade. Mars is rulership here, which describes a friction or an ease in how the planet operates, and says nothing about the person.