Wiking Sommer (Viking Summer) is the final installment in RZM Publishing’s 3-volume photo book series, which includes Unternehmen ILSE and Kampfgruppe Mühlenkamp. The series chronicles the operations of the 5. SS-Panzer Division “Wiking” in eastern Poland from April to August 1944

This is partial text from the full article (usually with photos) at https://armorama.com/news/rzm-publishing-wiking-sommer