Imperium Archive
Edict of Nikaea
The Emperor's decree banning the use of psychic powers among the Legiones Astartes.
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WARHAMMER
40,000 COMPENDIUM
Historical Documents
The earliest recorded Tyranid contact and the fall of Tyran.
The Chronicles of the First Devouring document the Imperium's initial encounter with Hive Fleet Behemoth. The research station on the world of Tyran was the first to identify the extragalactic threat, transmitting a final data-burst before being consumed. The information in this document proved vital to developing early counter-strategies.
The Battle of Macragge, where the Ultramarines sacrificed their entire 1st Company to halt the hive fleet, is documented in harrowing detail.
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