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In page Mountain Jews:

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In the Second World War, some Mountain Jews settlements in Crimea and parts of their area in Kabardino-Balkaria were occupied by the German Wehrmacht at the end of 1942. During this period, they killed several hundreds of Mountain Jews until the Germans retreated early 1943. On September 20, 1942, Germans killed 420 Mountain Jews near the village of Bogdanovka. Some 1000–1500 Mountain Jews were murdered during the Holocaust. Many Mountain Jews survived, however, because German troops did not reach all their areas; in addition, attempts succeeded to convince local German authorities that this group were "religious" but not "racial" Jews.[2][3]