Hi there! Anyone specialize In military divorce for spouses?

Well, been married for almost 15 years, to a military man, we just recently had a baby in 2015.. and currently now he is deployed… he has cheated on me in the past in 2014, but I gave him a chance to change. Reason I found out he was cheating was because when he was deployed, the girl he was having an affair with messaged me on Facebook saying that they had been together and that he was his gf. They even had Facebook posts together spending time, and he didn't even tell her he was married…Not only that, but I don't think my trust for him is there anymore..And he is such a family boy and mama's boy, even his mom and step dad comes to the house unexpectedly and unannounced. I only find out in an hour once they arrive.. even his parents can be quite rude as to they go about our house acting like it's theirs, but I don't say anything.. and let it be.. We own have a house together.. I just want custody of my son since I am usually, well let's say majority 24-7 and caretaker since he's a