The First Great War

Lore & Background

Before the Great War, the Kingdom of Liberl operated under the 'Old Liberl' system—a centralized, militaristic government that projected its will across the surrounding territories. The war that followed was a cataclysmic contest for dominance over the region, pitting the old Liberl war-machine against the forces of the Crossbell region and drawing in the broader continental powers. The fighting was brutal and prolonged, and its conclusion did not produce a clean victor so much as a mutual exhaustion that forced every side to the negotiating table.

The peace that followed was not a return to the status quo. The old authoritarian structures of Liberl were dismantled and replaced with a constitutional monarchy, a deliberate attempt to ensure that no single branch of government could again drag the kingdom into such a war. Crossbell, battered by the conflict, emerged as a recognized free city rather than a vassal territory, a compromise that satisfied no one fully but prevented immediate renewed hostilities. The terms of that peace—its ambiguities, its buried provisions, the military installations left dormant in the countryside—became the powder keg that generations of politicians and, later, conspirators would exploit.

In the lore of the Trails series, the Great War is treated less as a single dramatic battle and more as a slow, grinding attrition that left scars on the land, on the political institutions, and on the collective memory of the people. The 'Old Liberl' is spoken of in textbooks and old letters as a bygone era, and the war itself is often summarized in a paragraph. But for the characters who walk the roads of Liberl and Crossbell in 1204 XC, the war is not history. It is the reason the borders are where they are, the reason certain families still hold grudges, and the reason a secret society would consider it worth resurrecting the old war-machine to 'correct' what the peace had done.

In Their Own Story

The rain had not stopped for three days when the last column of Old Liberl infantry marched through the gate of Crossbell and into the mud. Sergeant Aldric did not remember the name of the general who had ordered the advance, only the sound of the drums and the way the sky had turned the color of old blood. He was nineteen. He would be forty-three when he finally set down his rifle in a field outside the capital, and he would never again be able to sleep through the sound of rain on a tin roof.

The treaty was signed in a hall that smelled of wet wool and ink. No one celebrated. The children of Crossbell, who had not known a day without the distant thud of artillery, simply went back to their lessons. But in the back of the hall, a young clerk from the Liberl delegation pressed his quill into the parchment and, in the margin, in handwriting so small it was nearly invisible, wrote a single word: 'Remember.'

No one found that margin for a hundred and twenty years.

Reader's Guide

The Great War sits approximately 120 years before the opening of Trails in the Sky FC (1204 XC), placing it in the late 1000s of the Zodiac Calendar. It is never shown on screen; the player encounters it only through references in dialogue, library books, political commentary, and the physical remnants it left behind—abandoned fortifications, old treaties, and the very borders of the map.

In Trails in the Sky FC and SC, the war is the unspoken context for Liberl's constitutional monarchy and the uneasy coexistence between Liberl and Crossbell. The Ouroboros conspiracy draws directly on the war's legacy: their goal is to restore the old, centralized military power of 'Old Liberl,' effectively re-fighting the Great War from the other side of the table. The Crossbell Incident in the 3rd chapter of Trails in the Sky is, in a sense, a re-ignition of the same territorial and sovereignty tensions the war was supposed to have settled.

The war also matters to the broader continent. The political compromises it forced created the fragile balance of power that the Kingdom of Aurelia, the Holy Grathma Theocracy, and the other nations navigate in the later Trails games. Understanding the Great War is understanding why the world is shaped the way it is—and why so many factions want to tear it open again.

For players, the key takeaway is this: the Great War is not a side-quest lore drop. It is the gravitational center of the political world the series builds, and every major faction in the franchise is, in some way, a reaction to it.

Did You Know?

• The 'Old Liberl' government that existed before the Great War is treated in the series as a distinct historical era, almost a separate political entity, rather than simply 'Liberl before the war.'
• The peace settlement that ended the Great War established Crossbell as a free city, a status that remains a point of political tension throughout the Trails in the Sky storyline.
• The Ouroboros conspiracy's stated goal in Trails in the Sky is explicitly tied to the war: they seek to restore the centralized military authority of the Old Liberl era, effectively trying to undo the peace.
• The Great War is never depicted in cutscenes or flashbacks in the main Trails games; it exists entirely in the world's background, referenced through dialogue, documents, and the physical landscape.