Moon opposite Mars (orb 1.8°) puts the two planets face to face, with visible back-and-forth or tension. The orb is very tight; this describes a stable character pattern more than a passing reaction.
Here, Moon in Aquarius in House 12 brings personal dream, play, inner child, childhood imprint, mother figure, mother image, optimism, and inner rhythm into House 12 (retreat, contemplation, long time, and possible confinement), with Aquarius style (independence, networks, distance, and collective change); Mars in Leo in House 6 brings action, courage, competition, and effort into House 6 (daily work, technique, and bodily discipline), with Leo style (presence, pride, creation, and the wish to be seen).
Concrete conflict: this aspect sets inner safety, childhood imprint, or mother image against action, anger, or confrontation: the drive to act can be slowed by protection reflexes, an inhibiting mother image, or the feeling that action was not safe. The house conflict is between House 12 (retreat, contemplation, long time, and possible confinement) and House 6 (daily work, technique, and bodily discipline); pressure in one field tends to reactivate the other.