Ukrainian Military Organization

The Ukrainian Military Organization (Ukrainian: Українська Військова Організація, UVO) was a Ukrainian resistance and sabotage movement active in Poland's Eastern Lesser Poland during the years between the world wars. Initially headed by Yevhen Konovalets, it promoted the idea of armed struggle for the independence of Ukraine.

Created by former members of the Sich Riflemen in August 1920 in Prague, the UVO was a secret military and political movement. Initially operating in all countries with Ukrainian minorities (that is Poland, Czechoslovakia, Bolshevik Russia and Romania), with time it concentrated on actions in Poland only. It was also active among the Ukrainian diaspora abroad, most notably in Germany, Lithuania, Austria and the Free City of Danzig.

Apart from military education of the Ukrainian youth, the UVO tried to prevent cooperation between Ukrainians and Polish authorities. The UVO was involved in a bitter struggle with the Poles during the 1920s. The group was treated harshly and retaliated with violence. It was, however, rather a military protective group rather than a terrorist underground. It organized a number of assassination attempts on some of the most renowned Polish and Ukrainian politicians, some of which were successful. Among such attempts were a failed assault on Józef Piłsudski and Voivod of Lwów Kazimierz Grabowski on September 25, 1921, the successful murder of Ukrainian poet Sydir Tverdohlib and assassinations of Ukrainian activists Wasyl Pihulak and Iwan Bachmaszczuk in 1922, as well as a failed attack on Poland's president Stanisław Wojciechowski in 1924 and the Nonpartisan Bloc for Cooperation with the Government (BBWR) deputy chairman Tadeusz Hołówko. It organized three bomb attacks on the Eastern Trade Fair in Lwów in 1929, bombings of train stations, railway tracks, pumping stations, burnt and blown up police buildings (e.g. in Yavoriv, Gródek, Uhnów, Lubaczów) and Polish households; it was also active in destruction of telegraph, telephone poles and committed a number of expropriation attacks - amongst them - the robbery of 100,000 złoty (then the equivalent of 20,000 dollars) from a Lviv Post Office in 1925. The terrorist actions of the UVO became one of the reasons for creation of the Polish Border Defence Corps.

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