User blog comment:ChaosLordRadec/OK... this is strange/@comment-3993996-20120716202507

Most forces can allie with each for different reasons. On one of GW's old articles it clearly stated that the Hive Mind could posses some Guardsmen for its own reasons, or that radical Inqusitors sometimes use Orks as cannon fodder. Its nlikely however that the Grey Knights will allie with Deamons for example. Most should be treated as hated enemies or distruestful/tempeory allience.