This Day in Jewish History / Finnish citizenship for 'Mosaic Confessors'
Which led to the anomaly, in WWII, of a field synagogue in the Finnish camp by the Nazi camp.
On December 22, 1917, the Finnish parliament passed an act that offered citizenship to “Mosaic Confessors” – that is, the country’s Jews. The act, which followed Finland’s declaration of December 6, went into effect several weeks later, on January 12, 1918. At the time, there were a little over 1,000 Jews living in the country.