This last point might suggest that the name is externally bestowed, in which case the need for an intimate knowledge of Dutch (and its informal naming "conventions") is somewhat lessened.
Didn't explain myself very well. What I meant was that modern-day mercenaries, if they are in a group, tend to call themselves security consultants and the like, and take to themselves official and security-type names. They don't, for instance, call themselves 'Dogs of War Ltd' (I know... there's bound to be one!!
) So a group formed at the end of WWII, if it was still in existence now and not just a club for old and/or would-be soldiers, would more than likely have changed its official name to something less redolent of murder and mayhem, even if among its members it retained the old name.
I take your point ref the nickname, Ursa, but did we generally give foreign resistance fighters English nicknames of that kind? I know the SOE was active in the Netherlands (though disastrously so, by all accounts), but again I don't think names of this kind were given were they? In France networks, rather than ad hoc groups, were given formal code names eg 'Prosper'.
I know this is only fantasy so Brett can call them whatever he wants, and if he'd said this had happened at the end of WW
III, then fair enough, any name is up for grabs in any language. It's just when real historical events are being used I get all pedanticky.