The Great War refers to a world-wide war that took place between the Yamatian Invasion and the Cataclysm in the years 1003-1006 AE. It was fought between the armies of Light led by King Marcus Sarillius of Remon and King Kagetsu II of Maar Sul and the armies of Darkness led by High Cleric Distreyd Thanadar XII of the Clergy of Mardük and Shogun Masamori Hyuga of the Yamato Empire.
Details of the war
Three years after the Yamatian Invasion, Leon Alcibiates led a rag-tag group of people into Tes Pellaria. There he met the Faerfolc and invoked the spirit of Agarwaen who had once been the king of Manster which had become Remon. Agarwaen told Leon that a certain paladin from the group, named Marcus Sarillius, had the blood of kings in his veins and thus would be his rightful heir and the next king of Remon. The heroes who had accompanied Marcus and Leon became collectively known as the Fellowship of Tes Pellaria, and they began drafting people from villages in Northern Remon and eventually even formed an alliance with dwarves of Drithenspire.
After many battles against the Yamatians and agents of Mardük, the Fellowship reached Folsworth Woods. They eventually managed to form an alliance with the elves there after doing a few quests. A Maar Sulais delegation appeared too, pledging Maar Sul to Marcus's cause in return for Marcus's help in the liberation of Maar Sul from Yamatian tyranny. The Fellowship with its new allies came to be collectively known as the Grand Alliance.
The Grand Alliance succeeded in liberating Remon after many battles, and it did the same to Maar Sul and Aison. Libaterra was almost saved, but the Faerfolc Rampage and the accidental reactor core explosion caused so much damage that the Alliance had to flee from Libaterra and head for Yamato. They eventually pushed the Yamatians and agents of Mardük back and had the final battle of the war near Kageshima. Mardük appeared during the battle and opened the portal to the Demon Realm. The Godslayer arrived soon after and devoured Cardia and Mardük, starting the Cataclysm.
The heroes were forced to flee back to their countries of origin, and the Great War came to an end albeit with a terrible cost as many people died in the rampage of the Godslayer and the demons. The Age of Emptiness had begun.