I've been going through similar circumstance. Your husbands secretive behavior on his cell and the computer is probably because he's communicating with someone else. Especially if they're not talking to you. My husband has been doing the same. I'm overseas so I'm not sure how different things are from here to there, but you might be able to get free legal advice from JAG on post. As long as your husband hasn't been seen by them. They should be able to help you with drawing up separation/divorce papers. They can't file them for you, but they can help you for free, which will save you $$ in a civilian office. Hopefully your husband is willing to cooperate in working out what he'll give you and what you feel you deserve. If not, go do all of the legal you need to on your end and those approved in a court will be enforceable by his command. You are entitled to be taken care of for as long as you are his wife. Find out how long a divorce takes to be finalized in your state. You'll be looking for spousal support if he's been the main breadwinner in the family. Google military divorces in N. Virginia and you'll get info in a few places. Here's one for example: http://www.srislawyer.com/
Good luck with your search and with your marriage/divorce.