While I agree that we should not go to war specifically to spread our morals in other sovereign nations, Why are we there to begin with in a "nation building occupation"? Good luck having an independent and functioning Afghanistan in which there is rule of law if the ANA and ANP can seemingly have carte blanche without consequence. If we are to say "their soil, their rules" then we should not be there and let the chips fall where they may. Alternatively if we just wanted the Taliban out of power it was done earlier on and we should have left it to Karzai and the Northern Alliance back in 2001. If its just about destroying the Enemy then Total War or no war. If you are to go to war do so with a clearly defined objective that makes sense for the long haul or not at all. Yes, every service-member should not necessarily act unilaterally in uniform but neither should bureaucratic principles be the only rule in which you act as a human being IMO.
As far as the authors statement, "His orders precluded his morals from having justification" with that you could justify ANY action or process no matter how heinous. Nuremberg trials anyone?
Though I'm sure many of you on this board have personal experience in these conflicts so I may be preaching to the choir.
-EB