What's your source for this story? The Book of Enoch? It's not in the Bible, though people think it is...
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the war in heaven is in the bible, i forget which book, exodus maybe?
in a different form but a lot of correspondences it's found in the Vishnu Purana as well
the ancient greeks called it the Titanomachy, the war of the titans, and the titans claimed to have won it but that isn't true because they turned tail and sailed off around africa counterclockwise and ended up in the red sea and invaded the peoples there (this all is around 15,000 years ago btw, before the mini ice age that was the younger dryas)
i'm pretty sure it's in sumerian mythology and babylonian and almost everywhere, and many versions especially by the cultures that were invaded by these ass-pirates in the now middle east (was lush green land then, before the fly-by of a meteor that blew up over the atlantic) and established the first modern tyrannical monarchies, and started the "mandate of heaven" or "divine right of kings" perversions
You're right, I recall now war in heaven is mentioned in Revelation 12. But it's a matter of interpretation as to when that war occurred and what specifically it is talking about.
Interesting stuff you're talking about there, regarding human history that took place over 15,000 years ago. I've heard of the Younger-Dryas theory, but I need to read up more on it. When you go back much more than 5,000 years you get into pre-history, before any surviving written texts, so I'm not sure about the sources of the information concerning what happened prior.