It was as compelling a piece of video as you'll ever see: A scout with the Ten nessee National Guard, whose unit is headed for Iraq, publicly berating Secretary of Defense Donald Rumsfeld over his fellow soldiers' alleged lack of adequately armored vehicles. What made the footage even more powerful was Rumsfeld's response: The normally unflappable secretary stood motionless momentarily, seemingly at a loss for words, before answering. Rumsfeld responded with characteristic candor. "You go to war with the army you have, not the army you might want or wish to have at a later time," the secretary said...