The movie just goes to show you that War. War never changes.
Since the dawn of humankind, when our ancestors first discovered the killing power of rock and bone, blood has been spilled in the name of everything: from God to justice to simple, psychotic rage.
But it was not, as some had predicted, the end of the world. Instead, the apocalypse was simply the prologue to another bloody chapter of human history. For man had succeeded in destroying the world - but war, war never changes.