You searched for: “titanomachy
titanomachy (s) (noun), titanomachies (pl)
Gigantic and violent warfare: Some wars have been titanomachies in that they were so huge and destructive that it took a great deal of effort to re-establish some degree of normalcy for the nations to recover.

The term titanomachy is based on the furious battles that took place between the Titans and the Olympian gods as expressed in Greek mythology.