Yeah remember they're basically zombies that know how to use guns, they have some free will to act independently in combat but nothing else.
They're the non chaotic remnants of the revolutionaries and yeah the Hammerguard is what they are officially called now thanks to @GoreWrencha. Seriously it's a good name so I'm sticking with it.
Well it works so I'm 'burrowing' it again. That and just because they have a similar symbol doesn't make them the same group these guys are after actual equality and freedom from the imperium but unfortunately some of them turned to chaos and all the shit hit all the fans which then exploded creating a civil war that did many many horrible things to the planet and it's people. Good intentions and all that.
Pretty sure the world eaters are too busy screaming and murdering everything they come across to figure out time travel so you're good to use whatever symbol you see fit.
I feel a bit left in the dust because i got really lucky and now i cant fight anything... This makes me a sad sad mutant. Also i like the sound of the hammerguard , may or may not ask to join.