Zwiazek Walki Czynnej

Związek Walki Czynnej (abbreviation: ZWC; Union of Active Struggle; also translated as Union for Active Struggle and Union for Active Resistance) 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's Revolutionary Faction.

After the extremely successful Bezdany raid in 1908, Piłsudski decided to transform the Combat Organization into a newer, larger formation. The ZWC's main purpose was to prepare Polish officer cadres for a future Polish army for likely hostilities with Russia, one of the three partitioners of Poland, seen by Piłsudski's faction as Poland's worst enemy. The goal of Piłsudski and his followers was independence and liberation of Polish territories, and for that reason he became a temporary ally of the weakest of the partitioning powers, Austro-Hungary. Piłsudski was convinced that the Central Powers would first defeat Russia but that they, in turn, would be defeated by England and France. His documented prediction, in the event, proved correct.

ZWC was led by Piłsudski, and below him was the Main Council (Rada Główna) and Association Department (Wydział Związku) composed of four members: Kazimierz Sosnkowski, Władysław Jaxa-Rożen, Stefan Dąbkowski and Zygmunt Bohuszewicz. Many of ZWC members were students. ZWC had members in all three partitions, as well as in some larger academic Polonia centers outside Poland.

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