The Fifth War Against Chaos

Lore & Background

For centuries, the protective barriers holding back the Chaos Gods had weakened under the strain of constant magical warfare. The Fifth War began not with a declaration, but with the sudden tearing open of the skies as daemons poured into the physical realm unchecked. Kingdoms that had stood for millennia crumbled in days as the fundamental laws of magic and nature were rewritten by the entities from beyond.

In Their Own Story

The sky above Altdorf did not darken; it bled. Captain Kaelen tightened his grip on the pommel of his sword as the horizon split open, revealing a churning vortex of green fire and screaming faces. There was no sound of war drums, only the wet tearing of reality itself. Around him, men fell to their knees, praying to gods who had long since turned away. He looked up at the descending shadow of a great horned beast and realized that history would not record this day as a battle won or lost, but simply as the end.

Reader's Guide

The inciting incident began with the sudden failure of the Great Vortex, allowing Chaos energies to flood into the Old World without resistance. This triggered immediate invasions across all continents, forcing disparate factions to unite under Sigmar's banner for a final defense. Key battles included the fall of Ulthuan as the Elf homeland sank beneath the waves and the siege of Altdorf where humanity made its last stand. The turning point arrived when Archaon confronted Sigmar directly in a duel that shook the foundations of creation, determining the fate of all existence. The ultimate resolution was not victory but transformation. The Old World was destroyed completely, wiping out the physical geography and most of its inhabitants. Survivors were transported to the Mortal Realms, ending the Warhammer Fantasy timeline and initiating the Age of Sigmar.

Did You Know?

• This conflict directly led to the creation of the Age of Sigmar setting.
• The High Elf homeland of Ulthuan was destroyed during this war.
• Sigmar returned from the realm of Azyr specifically for this final confrontation.
• It is considered the fifth major campaign against Chaos in recorded history.