Some reference material a la Google:
http://www.reuters.com/article/domestic ... edType=RSSQuote:
Those with military service committed suicide at a rate 2.13 times higher than the other men, but did not have a higher risk of dying from disease, accidental causes or murder, the study found.
Of the veterans, about 29 percent served in the Vietnam War, 28 percent in World War Two, 16 percent in the Korean War and the rest in other conflicts up through the 1991 Gulf War.
http://www.timesonline.co.uk/tol/news/w ... 873622.eceQuote:
At least 6,256 US veterans took their lives in 2005, at an average of 17 a day, according to figures broadcast last night. Former servicemen are more than twice as likely than the rest of the population to commit suicide.
Such statistics compare to the total of 3,863 American military deaths in Iraq since the invasion in 2003 - an average of 2.4 a day, according to the website ICasualties.org.
It's important to note that not all veterans included in these statistics served in the Iraq war, but served in general. It has not been proven that this is a direct tie to military service. The reasons for joining the military could be the same reasons for someone wanting to kill themselves. Correlative Statistics.