Editing Imperium Asunder Campaigns (section)

==Other Crusades==

===Damocles Gulf===
Alexios goes to glass Tau'n and Kor tries to stop him.

Warp Raiders and Negators show up to fuck with Alexios.

Angels of Light might well accuse Kor of collaborating with heretics, and perhaps a decent number of observers buying it. (Maybe a deliberate goal of the Warp Raiders in order to destabilize the region or something?
Heck, the other states might even get together and invade the Protectorate.

I imagine the Angels would also blame the Serpents. Even if the Serpents do maintain official neutrality and manage to be sneaky about moving the Tau who manage to survive the Angel's reprisals, the Angels are going to suspect them. I don't think any of the states will take accusations of the Serpents attacking the Angels in collaboration with the Negators and Raiders seriously, but I imagine that suspicion will abound that the Jade Empire prospered from that war. Trying to shape events to kill Alexios? Not at all, but using position and 'neutrality' to salvage Tau technology and scientists? Most definitely.

So basically, I think the aftermath of the Tau crusade opens major rifts that are still at play when the 13th Crusade hits, the kind of situation where there might well be fleets in the warp bound for nascent warzones in other states which are re-directed to the gap in the fire-wall.

Maybe the Sky Serpents are fighting the Angels on some moon, one legion or the other are reinforcing a PDF or something and so as the Astartes charge, a call comes in, the same call to both sides, and the Astartes stop mid charge, the marines defending the position lower their weapons to listen to the message coming in. 
Part of the firewall has collapsed and traitor fleets are pouring in. The issue is instantly forgotten the armies return to orbit together as part of a single redeployment to be sent into the heart of the Maelstrom Gap.

"Of course the cursed Warmaster would know when we are weakest, and strike when our backs were turned. His Eyes see all. We have been blooded by the alien and the mutant, and now the Heretic has come to slit our throats. The White Angel's ashes blow in the winds of Tau'n, and the slithering mass of Tyranids creep upon Cydonia's doorstep.

Damn us for being blinded by petty grievance, for our lack of vigilance has damned mankind! The End times are upon us, may the God Emperor have mercy on our souls."

>Ionnas Komnene, Strategos of the Griffonwing chapter