Its inhabitants, Humans, would call it Forasev for short...

The location of the planet had been known for ages, but it had been less than a generation since the Imperium broke ground here. Crusades and colonization efforts take fuel, something which Septimus Quadraticus Sistema IV Alpha-VII Principale had long been known to have in abundance; however, only now had this place become logically sound for 'the Emperor's' attention.

Volunteers as well as the volunteered made Forasev a vital lifeline for the outer extremities of the Imperium. Mines, refinery, housing, and of course a cathedral to the Emperor were all present when fate would have other eyes looking to this place. The Imperium had the foresight, though, to leave a garrison of Imperial Guard to safeguard their interests.

Imperials were not the first to look at this place, as was said, Eldar came before. Even they were not the first. To the would-be dismay of the governor, the guard was not the strongest force on the planet... and to the unfortunate surprise of the Bishop, it was not the Emperor's will that guided their success or failure...

No, the Emperor's will did not even dictate the actions of all the people who lived in such a place.