Basilisk War

The so-called Basilisk War is a xenocidal defensive campaign being conducted by the Blood Serpents Space Marine Chapter and their allies from local Astra Militarum and Planetary Defence Forces against the endless Tyranid forces of Hive Fleet Basilisk. This campaign is currently still ongoing.

History
The Hive Fleet Basilisk is a Tyranid Hive Fleet invading the galaxy through the Segmentum Obscurus. Its strange path through the galaxy completely defying typical Tyranid tactics, just floating past viable targets, only to return and devour them later. This strange tactic has forced the defenders of the sector to constantly be on the move in an attempt to fortify the entire Segmentum.

The Blood Serpents constantly have a couple companies spread out across the Segmentum to defend against the Hive Fleet. Additionally, the Sky Serpents are almost constantly on the move trying to take the fight to the Hive Fleet, usually resulting in the death of most of the company whenever a fight occurs resulting in Skyrog returning to Astoran to recruit more men into his company.