Mars is in detriment in Libra. I have this placement myself and can tell you all about it.
Mars, by it’s nature wants to conquer. Mars in Libra wants to act fairly which is completely ineffectual against a true warrior.
For example, Mars in the opposite sign, Aries, with initiate the fight. Aries will throw the first punch which provides real advantage over Libra who is always responding and often in a placating way. Like this:
BAM!
Libra falls to floor, jar broken and tries to negotiate to get his or her way.
BAM!
“That wasn’t very nice,” says Libra.
Mars is Libra tends to fight for the underdog or the side that is underrepresented in the interest of balance. If the side they are fighting for becomes the overload, they will switch sides, acting again, in the interest of balance and fairness.
Mars in Libra has a drive to partner. This placement often comes with (or creates) discord, strife in relationship and almost always thinks, “the other” is the angry one.
If you partner with Mars in Libra, you are going to have a challenge one way or the other. Some like it. Mars-ruled, Aries and Scorpio come to mind. But others turn away from constant irritation that is typically pretty well disguised by superficial veneer.
Basically, there is a shiv beneath that doily and while Libra will go to great lengthen to avoid conflict, if you do push Mars in Libra to breaking point, it will be a bloodbath when their pent up anger is released.
Tell us about Mars in Libra, yours or others…