Des soldats qui jouent comme des enfants

One of Karl Kraus' dicta appears in a different guise in Jean Renoir's La Grande Illusion. Here is Kraus:

"Kinder spielen Soldaten. Das ist sinnvoll. Warum aber spielen Soldaten Kinder?"

Children play soldiers. That is sensible. But why do soldiers play children?

And here is what Captain de Boeldieu remarks to his fellow prisoners:   

«D’un côté, des enfants qui jouent aux soldats ; de l’autre, des soldats qui jouent comme des enfants.»

Once again, you can see how the subtitles distort things a little; changing the more aphoristic balanced sentence into a more specific observation with it's "in here" & "out there".