[jobu]

Suicidal people by definition have a low regard for their own lives, and are often in search of purpose or meaning. Enlisting to fight a war might be a solution to both. (I'm not an expert though, and the only evidence I have for this theory is knowing two fairly depressed people that enlisted during the recent Iraq war.)

[Dewie]

They found purpose in enlisting for/during the Iraq war? Well, whatever works for them, I guess.

[Cthulhu_]

Well yeah, makes sense doesn't it? From unemployed and sitting alone at home all day to someone part of a greater thing with both friends / camerades, a strict social structure, strict day-to-day routine, physical exertion, etcetera.

[Dewie]

https://www.youtube.com/watch?v=F-JFPePh6yM#t=15m05s

Like I said; if he thinks it's part of some greater thing, who cares!