The article is informative, and easier to read at the linked (Brazilian) source with illustrations that would be useful to those who are not fully versed in its details.
This, my FRiends, is why the Russians have forced every one of its thousands of Ukrainian POWs to take off their shirts. A large number of these "private army" soldiers are covered with tattoos of swastikas and Schutzstaffel, Das Reich, and Black Sun runes as well as images of Adolf Hitler and WWII Ukrainian Nazi leader Stepan Bandera. After seeing hundreds of them, an objective observer notices a trend.