Operation Savage Revenge:

de bene esse: literally, of well-being, morally acceptable but subject to future validation or exception

Their mission? To track down SS monsters who killed their SAS comrades. Their methods? Ruthless terror - and even harnessing the occult

After the Second World War ended, members of the SAS stayed in Europe to hunt down escaped Gestapo officers who had murdered their comrades in cold blood during the war.