The investigations of Marines for possible murders of Iraqi civilians in Haditha last November and, more recently, in Hamdaniyah, seem set to follow the usual course. If anyone is found guilty, it will be privates and sergeants. The press will reassure us that the problem was just a few "bad apples," that higher-ups had no knowledge of what was going on, and that "99.9 percent" of our troops in Iraq are doing a splendid job of upholding, indeed enforcing, human rights. It’s called the "Abu Ghraib precedent."

The fact that senior Marine and Army leaders don’t seem to know what is going on in cases like this is a sad comment on them. Far from being exceptional incidents caused by a few bad soldiers or Marines, mistreatment of civilians by the forces of an occupying power are a central element of Fourth Generation war. They are one of the main reasons why occupiers tend to lose. Haditha, Hamdaniyah, and the uncountable number of incidents where U.S. troops abused Iraqi civilians less severely than by killing them are a direct product of war waged by the strong against the weak.

There are, of course, lesser causes as well, and it is on the lesser causes that we tend to focus. Poor leadership in a unit easily opens the door to misconduct. Overstretched, overtired units snap more easily. Every military service in history has included a certain percentage of criminals, and a larger percentage of bullies. The fact that in both Iraq and Afghanistan, the insurgencies are getting stronger, not weaker, generates increasing frustration among our troops: nothing they do seems to yield any real progress. The enemy’s highly effective use of IEDs leads units that have been hit often and hard to take their frustrations out on the civilian populations, since they cannot find, identify, or shoot back at the people who are hitting them.

But all of these factors are secondary to the power of weakness itself. We may find it easier to grasp what the power of weakness is and how it works on us by first imagining its opposite. Imagine that instead of facing ragtag bands of poorly equipped and trained insurgents, our Marines and soldiers in Iraq were in a very difficult fight with an opponent similar to themselves, but somewhat stronger.

What would fighting the strong do for them? Being David rather than Goliath, they would see themselves as noble. Every victory would be a cause for genuine pride. Defeats would not mean disgrace, but instead would demand greater effort and higher performance. Even after a failure, they could still look at themselves in the mirror with pride. Knowing they faced a stronger enemy, their own cohesion would grow and their demand for self-discipline would increase.

If the enemy’s overmatch were too great, it could lead our units to hopelessness and disintegration. But a fight with an enemy who was stronger but still beatable would buck us up more than tear us down on the all-important moral level.

Now, to see the situation as it is, turn that telescope around. Every firefight we win in Iraq or Afghanistan does little for our pride, because we are so much stronger than the people we are defeating. Every time we get hit successfully by a weaker enemy, we feel like chumps, and cannot look ourselves in the mirror (again, with IED attacks this happens quite often). Whenever we use our superior strength against Iraqi civilians, which is to say every time we drive down an Iraqi street, we diminish ourselves in our own eyes. Eventually, we come to look at ourselves with contempt and see ourselves as monsters. One way to justify being a monster is to behave like one, which makes the problem worse still. The resulting downward spiral, which every army in this kind of war has gotten caught in, leads to indiscipline, demoralization, and disintegration of larger units as fire teams and squads simply go feral.

Again, this process is fundamental to Fourth Generation war. Martin van Creveld has stressed the power of weakness as one key, if not the key, to 4GW, and he is correct. It shows just how far America’s military leadership is from grasping Fourth Generation war that its response in Iraq has been to order all troops to undergo a two- to four-hour "refresher course in core values."

They are caught in a hurricane, and all they can do is spit in the wind. The rest of us should get ready for the house to blow down.