Warhammer Fantasy Codexery

The Second War Against Chaos

Humanity united against the North to halt the tide of corruption.

The Second War Against Chaos stands as a grim chapter in the annals of the Old World, marking one of four great crusades where humanity pushed back against the encroaching hordes from the North. Unlike the legendary First or the cataclysmic Fourth, this conflict is remembered for the desperate alliance forged between the Empire and Kislev to seal the passes through the World's Edge Mountains before the corruption could spill into civilized lands.

Region
The Northern Wastes & World's Edge Mountains
Participants
Imperial Army, Kislevite Cossacks vs Chaos Undivided
Outcome
Temporary Containment of Chaos Incursion
Era
Middle Period of the Empire
Key Location
The Northern Passes
Nature
Defensive Crusade

Lore & Background

Historical records suggest that during this period, the Chaos Gods intensified their whispering into the minds of northern shamans and cultists. The war was not merely fought with steel but against the creeping magical corruption that sought to turn the very landscape into a gateway for daemons. The scars left upon the land by this conflict remain visible in the desolate zones near the mountains, where few dare to tread.

In Their Own Story

Frost clung to Karl’s beard as he watched the horizon glow with unnatural green fire. Behind him, the banners of the Empire and Kislev stood side by side, stiffened by ice and blood. The enemy did not march; they oozed from the mist. He tightened his grip on his halberd, knowing that if this line broke, there would be no second chance for the cities behind them.

Reader's Guide

The inciting incident occurred when scouts reported unnatural disturbances in the northern passes, signaling a mass mobilization of daemonic entities within the Wastes. Imperial and Kislevite commanders recognized that neither nation could withstand the assault alone, prompting a rare diplomatic summit to coordinate defenses. Key battles raged across the frozen peaks of the World's Edge Mountains, where heavy infantry held narrow defiles against endless waves of Chaos Warriors and Trolls. The turning point arrived when a combined strike force destroyed a major corruption node, temporarily severing the enemy supply lines from the Realm of Chaos. However, the resolution was far from absolute; while the hordes were repelled back into the frozen north, the victory came at a terrible cost in blood and resources. In the aftermath, the alliance fractured as political tensions resumed, leaving the northern border vulnerable once more until the next great crisis arose generations later.

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