The savage treatment of slave laborers at the Nazi concentration camps Norderney and Sylt was standard, historians say. What made them exceptional was that they were on British soil. A panel of historians has released its findings on the German occupation of Alderney, one of four Channel Islands seized by the Nazis in World War II. The panel determined that up to 1,134 prisoners died during the occupation from 1940 to 1945, but rumors that tens of thousands were killed in a “mini-Auschwitz” were unfounded, the Guardian reports. The island is around 10 miles off the coast of France. Atrocious c…