Deathwatch.
It was not a specific place, nor did it have a fixed geographical location.
It was merely an organization jointly established by the Inquisition and the Astartes, intended to eliminate all xenos threats to the Imperium of Man. Its primary operational bases were Watch Fortresses and Watch Outposts.
Within the Imperium, there were four "primary" Watch Fortresses, fourteen "standard" fortresses, and over forty "outpost" fortresses.
All the fortresses and outposts together formed the combat network of the Deathwatch.
No one knew the precise whereabouts of the Deathwatch operatives carrying out missions. All information about them was highly classified, and they remained highly mobile so they could swiftly respond to every kind of xenos threat.
Kinov III.
A Deathwatch fortress in the Calixis Sector of Segmentum Obscurus. The lifeforms of this region were all combinations of animals and plants. Every plant struggled to grow and reproduce before being devoured by other species, creating an extraordinarily brutal environment. Every inch of land, every ray of sunlight, every breath of air was steeped in slaughter.
Even for Space Marines, surviving in such a place was a challenge.
The Imperium had launched ten expeditions into this world so far, and every one of them had ended in a disastrous retreat.
The creatures on this planet were somewhat similar to Orks. Most of them could not move, yet hunting had long become their instinct. Some pit flowers, resembling huge craters in the ground, would instantly drag prey underground when it passed by. Their reactions were so fast that even Aeldari could be swallowed if they were careless. The corrosive force unleashed by these flowers was more than even a Space Marine's body could withstand.
Bayonet Whips were mobile creatures with countless tentacles. Like assassins lurking in the shadows, they lashed out with barbed tendrils