Actually, there are plenty of sections in the Geneva Conventions to cover non-combatants, as well as combatants of all types. Just because someone seems to have not been covered doesn't give you an excuse to torture them. After all, your understanding of the law may be deficient.
Then, too, there's American law that governs the behavior of our troops, and the moral standards you learned at your mother's knee, or on the smart end of her switch.
We do not do torture. People who use torture will be penalized through loss of freedom.