The video that emerged in recent days appearing to show four U.S. Marines urinating on several dead Taliban fighters has outraged many people in this country. Secretary of State Hillary Rodham Clinton and Defense Secretary Leon Panetta have condemned the act, the military has promised an inquiry, and some experts are even suggesting that the act could qualify as a war crime.

Mainly, however, people seem simply to not understand it. Why would America's warriors — for that matter, why would anyone — urinate on a dead body?

I spent a year, off and on, with a platoon of U.S. soldiers in the Korengal Valley of eastern Afghanistan. There was a lot of fighting, a lot of casualties and an enormous amount of stress on the men I was with. I never saw anyone do anything like this, but then again, I never saw any dead Taliban fighters; the enemy always recovered their casualties before we could get there.