My bfriend and I have had 2 big fights and 2 big splits because of it. Both times he went back to his parents. They Hate me, they picture me as some monster. He is now working away with the raf in the falklands and says he doesn't know what he wants as his parents are ill over what happened. What's the chances we can make it up and be together?

As there was physical violence the best idea would be a PERMANENT split.
Call it a day and move on.
NO relationship can survive domestic violence, not in any meaningful manner.

A man and a woman physically injure each other, twice.
You go online to ask what the chances are that you will get back together, even though there is no way on earth we could possible know. That indicates that you and he have no communication skills at all, relying on some sort of fate to determine the future of your relationship. Love is a lot of work. Get busy talking it out, and ask yourselves where, when and why all this hitting came from. If you can't replace violence with walking away until you are calm enough to express yourselves, then you are doomed to a lifetime of this whoever you are with.