Well, first, happening in another country really is kind of a big deal, unless we want to be fighting everyone all at once.
Second, if you were looking that soldier in the face, wouldn't it be better to tell him that he's being shipped home because we're not fighting this stupid war any more? It's one thing to inflict casualties in a war of necessity like WWII. It's another thing to pick fights around the world, decide that these fights require a massive war effort involving hundreds of thousands of Americans, and then claim that bombing other countries is fine because we're trying to win a war. How about: if we can't win a war without committing gross human rights violations, maybe we shouldn't be fighting the war unless utterly necessary.