They're more than six thousand years old. Way older. Of all the secrets which they keep, they've never been particularly secretive about that one. There have been and will continue to be many victories and loses for both sides, but ultimately until god decides the war is to end, it will for us all remain a perpetual conflict. The only thing I've ever found curious is that their agents [keep telling everyone the rules of the conflict.](https://www.youtube.com/watch?v=xv0zOJ_aMpk)