The Second Great War

Lore & Background

In the broad history of Zemuria, the Second Great War stands as a turning point that reshaped the balance of power among the continent's major nations. Following the devastation of the First Great War, a fragile era of relative stability had taken hold—until old rivalries, territorial disputes, and ideological fractures reignited into full-scale conflict. The war pitted the great powers against one another, drawing in smaller states and leaving infrastructure, economies, and public trust in ruins. Its aftermath saw the redrawing of borders, the rise of new political factions, and the entrenchment of mutual suspicion that persists to the present day.

The specific grievances left behind by the Second Great War are a recurring motif in the Trails of Cold Steel series. Erebonia's militaristic governance, Calvard's political maneuvering, and the defensive posture of nations like Crossbell are all, in part, reactions to the trauma and strategic lessons of that conflict. Veterans' families, state archives, and even the design of modern fortifications carry the fingerprints of the war. The fear of a repeat is a constant undercurrent in diplomatic negotiations and military exercises throughout the games.

For the citizens of Zemuria, the Second Great War is not merely a chapter in a history book. It is the reason their grandparents lost a generation, the reason their borders are policed by standing armies, and the reason a single miscalculation between two capitals could plunge the continent back into the same horror. The war's legacy is the invisible architecture of every political decision the player witnesses.

Reader's Guide

The Second Great War is anchored in the deep past of Zemuria, predating the events of the Trails of Cold Steel series by a significant span. It is not a set piece the player fights through, but rather the gravitational well that shapes every political situation in the games.

In Cold Steel I and II, the tension between Erebonia and Calvard—fueled by historical grievances from the war—drives much of the military and diplomatic conflict. The Erebonian military's aggressive posture and Calvard's political machinations are both, in part, legacy responses to the war's outcome. Crossbell's struggle to maintain neutrality and sovereignty is directly tied to the fear of being swallowed by a conflict between larger powers, a fear born from the war's experience of smaller states being ground down.

Cold Steel III and IV deepen the picture, revealing how the war's unresolved questions—territorial claims, reparations, the status of border regions—continue to generate crises. The war also contextualizes the role of organizations like the Ouroboros and the broader political landscape of Zemuria, where every faction's current agenda is shadowed by what happened in that earlier conflict.

No single game re-enacts the war in full. Instead, it is revealed through documents, character backstories, political speeches, and the strategic logic of each nation. Players who pay attention to the lore in the Cold Steel series will find that the Second Great War is the keystone under the entire political structure of the series.

Did You Know?

• The Second Great War is never depicted as a playable battle sequence in the Trails games; it is conveyed entirely through backstory, documents, and the political behavior of nations.
• The fear of a 'third war' is a recurring thematic undercurrent in the Trails of Cold Steel series, with characters explicitly referencing the desire to avoid repeating the Second Great War's devastation.