RadOp, I don't like your question because it doesn't matter where you do your tour, its what events you experience that may cause a reaction. A soldier could have gone through a tour of Rwanda/Bosnia/Croatia just fine whereas on an earlier tour in Cyprus, while he was drinking beer and sunning himself on a beach, he could have witnessed/observed/experienced an event that could cause PTSD.
My personnel feeling is PTSD is being used as a catch all for any problems/ailments/performance/family stress experienced by a soldier who has served overseas. I have no doubt that some have actual PTSD but they are not always the ones taking advantage of the what the system provides.
As far as the military supporting these soldiers, I think the military system was ineffective in the early 90s as the CF system of support was broken through lack of experience and knowledge. Now I think we have swung hard the other way with the system bending over backwards to anyone who walks through the door.