Calling names already?
Seriously, this isn't some kind of make believe where some friendly NPC army comes to help and just leaves when they're done 'helping'. They are hired, paid, equipped and funded by Ukraine, and they're the elite arm of the offensive, just like Germany's SS division. In fact, so much like the SS, they use the same insignia.
Try to cut back on the video games kiddo, it's warping your sense of reality.