Isn't it funny...

[Astreja]

Let me put it another way- atheists can be great soldiers, but maybe they'd be even greater if they'd let God watch their backs?
It's a power thing..-

No, I think that kind of behaviour would cause cognitive dissonance by people pretending to believe in something that they know they do not believe.  The resulting mental contradiction and inner distrust would IMO impair reaction time and judgement, resulting in sub-optimal performance in the field.