Ginger, you HAVE taken the first step. Moving out of the apartment you shared, and into your own apartment is a huge step! Now you just have to maintain it. Pick up your stuff, and break off contact with him. It's tough because you had so many dreams of what you were hoping for, and now you have to admit to yourself that it won't come true. It doesn't make you weak though. It just makes you human. Breaking up is rarely easy. But you can do it, and you are doing it!
Just keep at it. Try to stay busy with friends and family when you begin to miss him. Remind yourself of what your life with him was really like. Don't let yourself go back.
A military upbringing is NOT an excuse for a grown man to be verbally abusive. There are many people from that type of a background who are not like this. If it's really an issue for him, then he needs to get help and solve the problem before he's ready for a relationship. It's not something anybody who's in a relationship should ever have to put up with. Good for you for recognizing that and getting out.
“This planet has - or rather had - a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.” ― Douglas Adams, The Hitchhiker's Guide to the Galaxy