To answer your question about why he wants a divorce: He says he feels betrayed and cannot trust me. When he returned from his last deployment he was depressed and angry. He began isolating for days at a time. He said we do not communicate well, yet often when I would attempt to broach important subjects he would leave the house or have an outburst which resulted in broken furniture. I got counseling for myself and was encouraged to push the issue of getting him help for his issues. When I reached out and asked for help for him, it embarrassed him. He never physically harmed the children or me, but he would say ugly things. He threatened divorce whenever he was angry, no matter how slight the trigger.
Sex has been minimal since I found pornography on his computer. He says there is nothing wrong with my looks, but that he is not attracted to me because we don't communicate well. When confronted about his treatment of me by an outsider, he accused me of sexual assault for initiating sex with him while he was still here (I did not assault him. I am a very, very petite person. He is much bigger than me and everyone who has heard that accusation who knows us has laughed hysterically.)