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. 

 you need to read The Apocalypse of Yajnavalkya

and it is absolutely loaded with references related to recent discoveries, it was only published in early 2023 and it is VERY current

you will agree with the hypothesis once you read through about 1/4 of that book 

 I was thinking you were going to refer me to Graham Hancock. I've heard he has produced some books and shows related to Younger-Dryas and very ancient Earth history. 

 possibly it's a pseudonym but i think it's a lot more comprehensive than what i've heard about hancock

my sense is it's someone who studies all of these things intensely and is their first  book, someone very clever and careful