From Warhammer 40k - Lexicanum
The Blood Crescent are a warband of Chaos Space Marines. In 357.M41, they battled the Space Wolves under Wolf Lord Asvald Stormwrack. During the battle, a young Logan Grimnar saved Asvald's life from one of the warbands Helbrutes.
- 1: Champions of Fenris - A Codex: Space Wolves Supplement — Saga of the Great Wolf