No idea what this is. I guess its just something someone put there for the sake of it, or just a laugh.
Hmm, I dunno, doesn't seem that special to me, its interesting that they put it there, but I really wouldn't worry about it. "A stranger forever" Could just be a troll to 40k newbies, since they will never achieve what we veterans have.
Hahaha - The intention was to more or less have a Latin version of Eternal Crusade. Google Translate might not be the best tool if you say it means something else If you are by any means a Latin expert - feel free to come up with a better Latin or High Gothic version. I actually not used it elsewhere because of the uncertainty.
Eternal: aeternus, sempiternus,perpetuus. crusade: Expeditio sacra, Cruciatae http://la.wikipedia.org/wiki/Expeditio_sacra
I guess, something like Aeternus Cruciatae would be better you are right - or twist it gothic-style as something like Cruciatus Aeternum. Actually, I will ask our Narrative Designer, Ivan, to come up with something too. We need to come up with a proper way to translate things into Low or High Gothic. I don't think GW gave us any dictionnary yet (that would have been helpful).