The war in Iraq took many prisoners. Some of them were the families and citizens caught in the middle of the fray. But others were the men and women who served in the U.S. armed forces and returned home different people, changed from who they were when they first went overseas.
By now you've probably seen at least one video of a soldier or Marine returning home and seeing his dog for the first time. It's one of the things the Internet does that really, genuinely tugs at your heartstrings.