In the vast and grim universe of Warhammer 40,000, the Mortadon Praxis is a group of star systems located within the wider galaxy, known for its strategic importance and the myriad conflicts that have taken place there.

The Mortadon Praxis is situated within the broader expanse of the Imperium of Man, to the galactic north of Ultima Segmentum just within Imperium Nihilus. It's characterized by its extreme proximity to the Cicatrix Maledictum, making it a focal point for chaos incursions and power struggles.

Before the destruction of Cadia and the Great Rift split the galaxy, the area was a verdant and productive part of the Imperium. Now however, the area borders on the Rift and whole systems have fallen foul of either the incursions of chaos or xenos.

Strategic Importance: The Praxis holds significant strategic value due to its resources, strategic position, or some other factor crucial to the Imperium's interests. This could range from control over crucial warp routes to access to rare materials necessary for the Imperium's war machine.

The Mortadon Praxis is in a permanent state of conflict against external threats like xenos invaders, or facing the constant encroachment of Chaos forces seeking to corrupt and destroy. These conflicts can range from small-scale skirmishes to full-scale planetary invasions, with each side vying for dominance over the region.

Despite the challenges it faces, the Imperium maintains a forceful presence within the Mortadon Praxis, deploying its military forces, including the Astra Militarum (Imperial Guard), Adeptus Astartes (Space Marines), and various other Imperial organisations to defend its interests and assert its dominance. The Blades Exemplar chapter have claimed the system of Thruscaal and deploy from there to meet the Imperium's foes.

Overall, the Mortadon Praxis represents a microcosm of the endless warfare and struggle for survival that characterises the Warhammer 40,000 universe, with its own unique set of challenges, conflicts, and dangers.