It's not directly based on a specific true story. It takes inspiration from historical events and conflicts but adds fictional elements for dramatic effect.
If 'The Great War 2019 Based on a True Story' is a movie, perhaps it's about a significant conflict that took place in 2019 and is based on real - life events. It could cover the political, social, or military aspects of that war. It might focus on the experiences of soldiers, civilians, or the overall impact on a region or the world.
The Great isn't based on a single true story. It weaves together various fictional elements and loose historical references to craft its plot. It's a work of imagination rather than a factual account.