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Polish citizenship guide

 
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Loss of Polish citizenship by entering military service in a foreign country

According to the Polish Citizenship Act of 1920 (Article 11, point 2), entering military service in a foreign country resulted in automatic loss of Polish citizenship. Such military service leading to the loss of Polish citizenship meant all categories of military service in a foreign army and foreign military organizations. What is more, voluntary military service in a foreign army was treated in the same way as compulsory military service in a foreign army if it meant voluntary acquisition of a foreign citizenship by a Polish citizen. Both cases resulted in the loss of Polish citizenship.

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