I have probably suffered from a low grade depression since I was a child, but it was greatly exacerbated when I was mobilized for service in 2003, at the beginning of the Iraqui Operation.
Gunny - just be aware, concussions (which many deployed have suffered) increase your risk of depression. Also, hormonal factors (low thyroid, low testosterone, etc) can cause depression - and some head injuries will affect the pituitary control of these hormones. Make sure you ask to have these things checked.
