In April-May 1940 the German Wehrmacht invaded Northern and Western Europe. The subsequent occupation of Norway, Denmark, the Netherlands, Belgium, Luxembourg, and France brought the Jewish population of these countries – both established residents and refugees – under German control. From autumn 1941 in Luxembourg and from spring/summer 1942 in Belgium, the Netherlands and occupied France, Jews were required to wear the ‘Jewish star’ and many were subjected to forced labour. By mid-1942, deportations from Luxembourg and France to the ghettos and extermination camps in occupied Eastern Europe had already begun, while in the other occupied countries they were imminent. In April 1942 Alfred Oppenheimer, the Jewish elder in Luxembourg, wrote: ‘A dreadful fate hangs over our community again. The worst that can happen has now happened and the Poland transport is a certainty.’ This volume covers Norway and Western Europe during the period from the German invasion to mid 1942 (developments in Denmark for this period are documented in vol. 12) and records how Jews in these parts of Europe were excluded from society and stripped of their rights, livelihoods, and property. Letters and diary entries by the persecuted Jews detail life under German occupation and the attempts by many Jews to emigrate. The sources show how Jewish organizations sought to alleviate the impact of persecution, and how the German occupiers and local collaborators targeted Jews with increasingly stringent measures and clamped down on any form of resistance.