Union of Active Struggle
Polish secret military organization / From Wikipedia, the free encyclopedia
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Not to be confused with Union of Armed Struggle.
The Union of Active Struggle (Polish: Związek Walki Czynnej; ZWC), also translated as Union for Active Struggle and Union for Active Resistance,[1] was a Polish secret military organization founded in June 1908 in Lwów by Józef Piłsudski, Marian Kukiel, Kazimierz Sosnkowski and Władysław Sikorski, all members of the Combat Organization of the Polish Socialist Party in the Kingdom of Poland.