I started a campain where 2 psykers and are tasked to set up a base of operation for the marine's chapter to start a crusade. Any ideas I can work into this framework?

1Raiderman said:

I think we would need more info than this to be of much help. Like more details about the characters and perhaps also if there are other people in the warband, you mentioned a Traitor Marine for instance. Also information about the Chapter would be nice, what kind of stuff are they looking for? Or is it just two players? Anyway some more info would be needed to give more help.

On what has been given I think that you should make two or three rough drafts of planets that the characters can choose between and then when they've chosen you can pick one of them out and flesh it out.

Is it a gathering base? I.e. a Fleet asembly and arms dump place?
Or a forward staging area? Defended base on the frontier, or maybe even just inside enemy areas?

Is said area already occupied?
if so by whom? The Enemy? nasty wildlife? Xenos (orcs or Kroots etc.)
Any other 'interested party? E.g. Eldar, Dark Eldar, Other chaos cults?
Any Rivals who may try to move in once they have set it up?

Will the enemy sit back and watch, or respond?
Have they already sent scout/sabateour squads in?
is there a batle force inbound to pre-empt your base?

Any chaos god rivalries?
E.g. Slanneshi cult on planet tha you want to use for a Khornate chapter?

Set up involves doing what? And with waht stuff from where?
You setting up tents and a picket fence, or a ferrocrete fortress with dockyards?
Where are getting the supplies from? This is Chaos - you can't just send in requisition forms?
Deals to be done, workers to be brought in and protected etc. etc.

I think we would need more info than this to be of much help. Like more details about the characters and perhaps also if there are other people in the warband, you mentioned a Traitor Marine for instance. Also information about the Chapter would be nice, what kind of stuff are they looking for? Or is it just two players? Anyway some more info would be needed to give more help.

On what has been given I think that you should make two or three rough drafts of planets that the characters can choose between and then when they've chosen you can pick one of them out and flesh it out.
The traitor marine has not decided what the chapter name is and the other player is his brother. The unnamed chapter sent the two brothers to take a out of the way base and prep the base for the arrival of the chaper. For now there are only 2 players in the war band and a few locals that are hangons.

The pc's are currently aligned somewhat with tzench. The area was a small mining base for the Imperium that the two pcs were tasked to take out and "repurpose" for the marines chapter to arrive. For now the pcs are trying to stay under the radar so that the imperium will not come retake the base.