Casualties And Numbers

Have we been drastically under-estimating the number of casualties from the wars in Iraq and Afghanistan? Bob Woodruff believes so. Money quote:

While the U.S. Department of Defense says that there have been about 23,000 nonfatal battlefield casualties in Iraq, Woodruff discovers through an internal VA report that more than 200,000 veterans have sought medical care for various ailments, including more than 73,000 diagnoses for mental disorders.

I'm not sure what the significance of these numbers are, but they bear looking into.