It's a bit more complex than a one-size-fits-all statement like this. Our collective, overly-self-righteous moral standard we insist our military adhere to is our Achille's heel when waging a war against an enemy who not only does nto hold the same moral standard, but exploits the fact that we do.
You know as well as I, war id reducing man to his basic, elemental animal state of kill or be killed. There's only one REAL rule ...WIN. If you are unwilling to do whatever it takes to win, you have no business engaging in war. If you are attacked and you are unwilling to do whatever it takes to win, then you will die, and your morals die with you.
You can possess all teh morals you want, and STILL have the understanding that in order to win in a live or die situation that you may have to go against them.
Morally, I am against the use of physical violence as a means to an end, period. I temper my idealistic, perfect world belief with the knowledge that there are those that do not believe the same as I do, and are perfectly willing to use violence as a means to an end and with whom there is NO negotiating.
My ideals will not perpetuate my life, my ideals nor my society. The knowledge and skill to beat the enemy at his own game WILL.