Horus Heresy Codexery

Death Guard

Grim defenders turned into living engines of decay and unstoppable siegecraft.

The Death Guard were one of the original twenty Legions Astartes, founded by the Emperor's son Mortarion. Initially renowned as masters of siege warfare and grim resilience, they eventually became synonymous with biological warfare and decay after falling to Chaos during the Horus Heresy. Their warriors were known for their stoicism and ability to endure environments that would kill lesser beings. Over time, this endurance was twisted by the influence of Nurgle, transforming them into agents of pestilence who sought to bring ruin through slow, inevitable corruption rather than swift destruction.

Primarch
Mortarion
Allegiance
Traitor Legions
Specialty
Siege Warfare

Lore & Background

The source does not provide specific details about the Death Guard's origin on a toxic death-world, their gene-seed granting resistance to poisons, or their reputation as the Emperor's most stubborn shield. It also does not describe Mortarion turning against his father, the Legion embracing Nurgle's corruption, or their transformation into harbingers of plague. The source focuses on the Horus Heresy series as a whole, not on individual Legions. Therefore, no lore can be written from the source.

In Their Own Story

The source does not provide any narrative or specific moments about Death Guard warriors in trenches, their power armor, Nurgle's gifts, or their advance toward enemy lines. No story can be written from the source.

Reader's Guide

The source does not provide information about the Death Guard's genetic origins, Mortarion's gene-seed, their tactical doctrine of attrition and siegecraft, their alignment with Horus, or their embrace of Nurgle. It also does not mention key leaders or their loyalty to the Ruinous Powers. Therefore, no guide can be written from the source.

Did You Know?

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