Of course I remember that bit, and it's hugely relevant.
The evidence is simple. Hilary Benn wanted to make the connection with ISIL and fascism. No problem with that. Ideally he wanted to do so in a way that presented Labour as the exclusive fighter of fascism in order to appease his own party. Since the conservatives opposed the creation of the international brigades Spain potentially played out to this narrative very well. But only so far. As the Trot whose made the observation points out, the appeal that ISIL is having, and the way it is able to reach beyond the borders of the conflict to recruit, is closer to the way that the international brigades formed than the government's aerial bombing campaign. It's not an unreasonable observation based on both historical fact and recent history
From this the Independent have run a headline which has succeeded in stirring up the emotional response in someone like yourself they were no doubt hoping to provoke. I don't see what they've said as some sort of glorification at all. At worst I'd call it point scoring, at best I'd call it cold observation. It is definitely based in fact though rather than opinion. Unless of course you want to try and deny that ISIL are able to lever in volunteers from around the world, and that the international brigades didn't appeal to similar sentiment, albeit with a polar opposite focus
Look, the way an army recruits and organises is actually very important, and in both cases the role played by international civilian volunteers is much, much higher than we usually see. It's a very pertinent dynamic and in the case of ISIL one of the horcruxes. I made it pretty clear that after this though, the similarities end due to they pursuing polar opposite objectives. I really don't see why you've got so animated about it.