Ukrainian Insurgent Army

The Ukrainian Insurgent Army was a Ukrainian nationalist partisan formation founded by the Organisation of Ukrainian Nationalists (OUN) on 14 October 1942. The UPA launched guerrilla warfare against Nazi Germany, the Soviet Union, and both the Polish Underground State and Polish Communists. The UPA carried out massacres of Poles in Volhynia and Eastern Galicia, which are recognized by Poland as a genocide. The goal of the OUN was to establish an independent Ukrainian state. This goal, according