Evan: This attack was extremely serious. I intend to... blame the local world.
Local world: ???
Evan: Xenos pirates showed up right on your doorstep! Talk! Have you been colluding with the enemy?!
Local world: We're innocent! We really didn't know the enemy was coming. We only had two gunboats, and both have already been destroyed. How were we supposed to stop that many enemies?
Evan: I don't care. I'm filing an appeal! I'm lodging a condemnation! I'm reporting you to the Imperium!
Local world: I @#$%#@
Evan: The higher-ups have replied. Planetary security falls under the responsibility of us Astartes. Right, this place is under my jurisdiction now.
Local world: Has it occurred to you that we're communicating in real time?
Evan: Right, I believe the main reason xenos appeared in this region is inadequate local defenses. The reason the defenses are inadequate is that this place isn't important enough. Therefore, building a fortress, major warehouses, and ship repair yards here is extremely important. I'll apply to the Imperium for funding.
Local world: You're... applying... for funding... How wise of you, my lord angel.
This place hadn't mattered before, but its position along the shipping route between the edge of the Imperium's current front lines and Langjuxu made it important to us. It could become a trade hub.
The application Evan submitted was simple enough. Sure, we'd lost three companies of battle-brothers during a Tyranid invasion, but decades had passed since then. We'd replenished our ranks to eight hundred. We weren't satisfied. We wanted to stir things up. We wanted to organize a crusade.
The world that had just come under attack would be the starting point of our crusade. We asked the Imperium to chip in a little and help us turn this little world into a trade...