Sun Tzu said: The art of war is of vital importance to the State  and is governed by five constant factors, 2 of the factors are The Moral Law, and Method and Discipline and all 5 are to be taken into account in one's deliberations, when seeking to determine the conditions obtaining in the field.......  

There's a little boy and on his 14th birthday he gets a horse... and everybody in the village says, "how wonderful. The boy got a horse" And the Zen master says, "we'll see." Two years later, the boy falls off the horse, breaks his leg, and everyone in the village says, "How terrible." And the Zen master says, "We'll see." Then, a war breaks out and all the young men have to go off and fight... except the boy can't cause his legs all messed up. and everybody in the village says, "How wonderful." Now the Zen master says, "We'll see."....  from Charlie Wilson's War

Let us hope that we aren't about to create two United States Marine Corps (1) 1775 - 2010 and (2) 2011 - ???   We'll find out for sure the next time our nation is seriously challenged on the battlefield if Sun Tzu was correct and if a moral compass is vital to the Art of War.