Hi all.
So, for those of you who like to play a fluffy army, I have a fun tip. That it doesn't have to stop at a background!
What I have started doing recently, for my daemons, is documenting each tabletop battle I have, with a tiny "History-snippet" of my own daemonic force, along the same lines of those in each of the 3 new codex's
For example, I played a 1500 point game against dark angels last week, and wrote.
996999.M41 - Dark angels sent to respond to report's of unusual psyker activity, and on arrival, are beset upon by "The Daemonic Cavalcade", an unusually reoccurring group of daemons known to be invading the sector, under the lead of a keeper of secret's, styling itself as Kyzari, Thrall of Slaanesh.
Contact lost with the Dark angels within a few short hours, though comm's seemed to indicate the battle was close fought, and the dark angels managed to force the majority of the daemon's back, at the cost of their lives.
Recommended course of action? Exterminatus. All Imperial forces dead, corrupted, or maddened beyond help. Bring the emperor's mercy.
This little snippet details the event's of a battle in which I won, but only barely. Writing up a continous fluff, can serve to bring great stories, as you can have battles in which old scores are to be settled, and such, and you can write from either yours, or the enemy's perspective for the history snippets.
Fun times, takes about a minute, and will eventually lead to you having a great, long, history of your own chapter/group/army/warband/whatever.