What is the least known about war in history and who were the participants?

If it's the “least known about War” in history then it stands to reason none of us would be knowing about it, wouldn't it? Maybe the armies of the Winged lions once laid siege upon the Sky Fortresses of the Kinnaras back in the Dwapara Yuga, who would I know?

I suppose some of the more high IQ Quora writers can dig up the story of some obscure powwow in some godsforsaken corner of the World but the question seems to be kind of pointless in the opinion of a simpleton like myself.