At the end of 1941, six weeks after the mass deportations of Jews from Nazi Germany had begun, Gestapo offices across the Reich received an urgent telex from Adolf Eichmann, decreeing that all war-wounded and decorated Jewish veterans of World War I be exempted from upcoming evacuations. Why this was so, and how Jewish veterans at least initially were able to avoid the fate of ordinary Jews under the Nazis, is the subject of Comrades Betrayed...