I'll leave it to others to list U.S. victories that involved many casualties. The Battle of the Bulge comes to mind--about 19,000 Americans dead.

But your two-dimensional view of warfare is one of many reasons that people like you should be kept firmly away from positions of authority in national defense. Our enemies fully expected our military to run away with its skirts up when they inflicted some damage. It had happened before, which is one reason the terrorists are taking that course now.

And if, in your world, casualties decide who is winning, why no mention of the ten-to-one ratios of insurgent deaths to ours?