To add insult to injury - my therapist (who works with military brass dealing with troops suffering from PTSD at war) has said that the military has a checklist questionaire for troops to fill out after their tour of duty. If they indicate they may be suffering from PTSD - they WILL NOT ALLOW THEM TO COME HOME, and will keep them overseas, or even send them back out on another tour.
When I heard him say this, I just about lost it.
It's a heroes journey, and you are the hero.
Loving Kindness Meditation will dramatically improve your spirits; give it a try for just 3 days: http://www.youtube.com/watch?v=sz7cpV7ERsM