Great Universal Supernova Wars, was a galaxies-wide military conflict lasting from 100,001 ABY to 100,040 ABY which mostly participated all of the galactic nations and nearby galaxies, including all of the greater coalition forces, organised into two opposing military alliances: the Galactic Coalitions and the Unconquerable Combine. It was the most widespread war in dimensional history, with more than 800 trillion military personnel mobilized. All the major participants placed their entire economic, industrial, and scientific capabilities at the service for war efforts, erasing the dividend between civilian and military resources. The war itself has been estimated in resulting 11 trillion to over 1 quadrillion sentient fatalities.