This is really why I'm going

An Army official said Thursday that 115 troops committed suicide in 2007, a nearly 13 percent increase over the previous year's 102.

Surpisingly (or not) suicide is a major issue in military mental health. Not a major issue in the sense that we just worry about it a lot, but a major issue in that suicidal active duty military members walk through our clinic doors all the time.

It's related to this (and I need to note that I did not know that 2007 had the heaviest US military casualties):

More U.S. troops also died overall in hostilities in 2007 than in any of the previous years in Iraq and Afghanistan. Overall violence increased in Afghanistan with a Taliban resurgence and overall deaths increased in Iraq, even as violence there declined in the second half of the year.

and this:

Records show roughly 40,000 troops have been diagnosed with the illness, also known as PTSD, since 2003. Officials believe that many more are likely keeping their illness a secret...
More troops also were serving their second, third or fourth tours of duty — a factor mental health experts say dramatically increases stress. And in order to supply enough forces for the buildup, officials also extended tour lengths to 15 months from 12, another factor that caused extra emotional strain.