Doesn’t seem to matter whether they’re Shiite or Sunni Muslims, or Israeli Zionists, Northern Ireland Catholics, or US troops and mercenaries.
Some big name somebody-or-other observed, “There are no atheists in the foxholes.”
My guess is that the reason there are no atheists in the foxholes is that the atheists are the ones actually giving the orders to blow things all to hell somewhere. Or at least atheists giving lip service to one religion or another.
And they need simple, God-fearing folk to get the job done.
Just a guess, though.