In addition, the pregnancy rate among female soldiers serving in Iraq, most of whom are unmarried, is rumored to be unusually high. The Pentagon has resisted releasing precise figures, even when pressed to do so. Last year, one female Marine actually gave birth on a warship deployed off Kuwait. But while we don't know what the overall pregnancy rate is among female soldiers serving in Iraq today, in Operation Desert Storm it reached 15 percent and was the single largest cause of evacuation from Bosnia during U.S. deployments there.

 Military service has become heavily sexualized, with opportunities for male and female soldiers, sailors and Marines to engage in sexual fraternization, which, though frowned upon -- and in certain circumstances, forbidden -- is almost impossible to prevent.

 So what does this have to do with those pictures of mistreated prisoners? Take a look at the faces of those soldiers again, especially the female soldiers. They look less like sadists than delinquents. They look like they're showing off at some wild party trying to impress everybody with how "cool" they are. What they are doing is despicable, but they seem totally oblivious.

  The men and women who engaged in this behavior abused and humiliated their captives, dishonored their country and deserve severe punishment. But if we want to prevent this type of conduct from ever occurring again, we not only need to punish those responsible but also look at all the possible factors that might give occasion to such abuses -- including the breakdown in discipline and unit cohesion that have gone hand in hand with gender integration in the military.