A recent 60 Minutes profile of an Iraq and Afghanistan veteran who committed suicide after suffering years of PTSD:
Some more context on the crisis:
About 20% of Iraq and Afghanistan veterans are thought to suffer from PTSD, though many do not report their problems. Instead they try to dose themselves. A VA study found that veterans suffering from PTSD or depression were about four times more likely to have drug or drink problems. Too many end up in the same desperate place as Eiswert. The VA reported that, on average, 22 veterans committed suicide each day in 2010. Last year more active-duty soldiers took their own lives than were killed in combat. …
In war, it is said, there are no unwounded soldiers. Bombs that shatter bones also batter brains. Even on the periphery, war afflicts men with aching joints, ringing ears and psychological damage. Imagine, then, the human damage wrought by over a decade of battle.