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Helican Crusade
From Warhammer 40k - Lexicanum
The Helican Crusade was a Crusade by the Imperium in M41 which apparently destroyed the Tyranid Hive Fleet Colossus. However despite its seemed destruction, there are rumors that Colossus has risen once more.[1]
Sources
- 1: Codex: Tyranids (5th Edition), pg. 31