US Army, 1972-1975. After Engineering school, we all received onion skins (pre-orders) to Nam. In the end we were split up, no one in our class went there. I was sent to Germany to the engineering platoon in a Maintanance Company. I volenteered and got assigned to ski patrol in the Alps during the winters. I know, cushy job, but I did feel the effects upon returning to the "World".
My son wasn't as lucky. Marine Corp, 2002-2006. During his second tour in Iraq, he was blown up in his Humvee by an IED. That was over a year ago. For the loss of vision in one eye, burn scars, severe pain in his left arm, hip, knee, and ankle, still has shrapnel working its way out of his body, short term memory problems, and he is suffering from PTSD: the VA gave him 10% disability ($115/month).