Mostly mystical, since that's what I'm used to. But really, most of those could be man made too since it's them using magic or whatever.
We did. I don't think there was much vampire participation at the time though. Not enough that I'm aware of anyway. If Angel or Spike were here, they'd probably know for sure. Riley might know if the reports aren't redacted and full of those black marks covering it all up. But anyway, WWII, Nazis, all of that.