It's funny to me how those who have never served chant the mantra of "they're trained to follow orders" like they are mindless robots. Although it's true that we are trained to follow orders, we are also trained to question their legalities.
If we participate in an unlawful order, it's our butts on the line as individuals when the smoke settles. We will be the one's to face criminal charges. Rightfully so.
It's just one of many things that makes our Military stand apart from military's across the globe.
"The temper of soldiers, habituated at once to violence and to slavery, renders them very unfit guardians of a legal, or even a civil, constitution."
Edward Gibbon