If my ex husbands Sargent found out....?

Court

If my ex husbands military comander/Sargent in the army found out he committed adultry on me, AND he had left a fully loaded, bullet in chamber 9mm Taurus gun on a dresser our 2 year old daughter could reach......

What could potentially happen to him and his military affiliation? :/

If it matters we live in california