Moon Conjunct Mars in Depth
Instinct with a motor attached
The Moon reacts. Mars acts. Put them in the same degree, within six to eight degrees of orb, and your reaction and your action become one motion. You do not feel something and then decide what to do about it. The feeling is already the doing, and you find out what you felt by watching what you just did.
This is why people with this conjunction are often described as having a temper when the more accurate word is speed. The emotional response is not larger than other people's. It simply has no gap in front of it.
Protective, and quick to defend
The Moon rules home, family, and the people you consider yours. Mars defends. So the most characteristic behavior of this aspect is not aggression toward strangers but immediate, disproportionate defense of anyone under your care. Someone criticizes your sibling and you are three sentences into a fight before you have decided to have one.
Sleep and hunger are worth watching here more than in almost any other aspect. Moon-Mars people are usually noticeably worse when tired or unfed, and the difference is large enough to be predictable. Treating that as a scheduling problem rather than a character problem solves a surprising amount. There is often an early history behind it. Many with this conjunction grew up somewhere that rewarded quick reaction, a loud household, a demanding parent, or a situation where the person who responded first got looked after. The reflex was useful then and it kept running afterward.
The long arc
Early on, this aspect makes life eventful in ways you did not choose. The turn typically comes when you stop trying to feel less and start extending the gap. Not suppression, which curdles this combination into something sullen and physical, but delay. One breath, then one night for anything written.
Somewhere in the thirties and forties, if that habit takes, the aspect converts into something genuinely rare, which is emotional courage. The willingness to walk into a hard conversation, a hospital room, or a confrontation on someone else's behalf without needing to be talked into it first.
Transits, and one practice
Transiting Mars conjuncts your natal Moon about every two years and holds orb for four to six days, and the transiting Moon crosses your natal Mars for a few hours every month. The monthly pass is short enough that most people learn to recognize it, a couple of hours of unreasonable irritation that ends as suddenly as it started.
The single most useful practice is physical discharge on a schedule rather than on demand. Regular hard exercise gives the aspect a standing outlet so it stops making one out of whatever is nearby. If anger is genuinely damaging your relationships, that is a matter for a professional, not for a chart reading.