 The unit sometimes dressed in ski-masks when they were going on "special missions" as they called it, which would often include breaking international law against human rights.Not much is known about the group but Swedish journalist Magnus Sandelin wrote a book about Arklöv called "The Black Nazi" ("Den Svarte Nazisten") detailing his childhood and his time in the war.Sandelin is one of few reporters who has been able to study some material from the war diary and wrote that Arklöv had written that he participated in "cleaning up" towns, by throwing grenades into houses and then shooting those inside.