Well Of Course They Do!

Study: Married Veterans Face Greater Risk of Suicide

Hell is other people. The ninth circle of hell is other people under the same roof you're stuck under.

There's also the guilt factor, though I rather doubt anyone who'd enlist in the military is capable of feeling guilt (or much of anything but craven fear of anything new or different) about murdering furriners who talk & look funny.

[Military.com]