Might add that there are some good wounded warrior programs in most areas, too.
I was driving into my little airport a couple of months ago and watched 3 guys in the airport utility cart chasing a naked man running with a half a bottle of Jim Beam down the runway @ 11am (2nd bottle, it turned out). The guy is a 20 yr recon Marine sergeant, only a few shrapnel scars on his torso, but he's completely scrambled from the neck up. A really good, intelligent man who is still fighting and right on the edge of control.
Tobacco itself can't help him, but it was a way to engage with him, for a start. He has a decent B&M no name pipe and was smoking some awful aromatic. I got him a tub of Westminster and Union Square (which he likes a lot) last month just to open contact, communicate and get his eyes on the horizon for a moment. No worries about "tobacco health issues" as I'd say the odds are 50/50 he will kill himself. In the last year, he's lost 2 of his last platoon to suicide and he takes that hardest.
I've never lived with military folk and now am immersed in the culture, living in north county San Diego. I can't believe how screwed up it is. These guys are wrecks.