From Warhammer 40k - Lexicanum
The Blackstar Liberation took place in 344.M33.
Warpstorm Korinthus finally abates, revealing the vast Blackstar System firmly in the grip of Chaos. More than half of the Blood Angels Chapter deploys to liberate the Imperial citizens of these worlds. The war that follows lasts two full years and pits the Blood Angels against a lethal coalition of Night Lords, Death Guard and Word Bearers. Eventually, the Blood Angels best their foes amid the nuclear fires of the battle of Neverwish, driving them back to the Warp in tatters. The cost is great, but the Sons of Sanguinius recover a huge and populous system for the Imperium
- 1: Codex: Blood Angels (7th Edition) — A Chronicle of Heroes