Dmytro Hrytsai

Dmytro Hrytsai ( "Perebyinis"; Ukrainian: Дмитрó Грицáй-Переб́ийніс; Dorozhiv, Galicia, 1 April 1907 – 22 December 1945, Prague, Czechoslovakia) was a leader in the Organization of Ukrainian Nationalists and a general in the Ukrainian Insurgent Army.
Life.
Born in Galicia, Hrytsai graduated from "gymnasium" in Drohobych (then part of eastern Poland) and became a member of the Ukrainian Military Organization ("UVO"). In 1928 he matriculated in the Lviv University Department of Physics and Mathematics. He did not graduate, being called to military service in the Polish Army. He completed officers' school with distinction.
In this period of his life he joined the Organization of Ukrainian Nationalists (OUN). From 1933 he directed the OUN Executive's military department. In 1934 he was arrested by the Polish police and was held for over two years at Bereza Kartuska Prison.
After his release, he resumed his studies at Lwów University.
In 1939 he was again incarcerated at Bereza Kartuska, but was released after Poland had been overrun by Germany and the Soviet Union.
In 1940–41 Hrytsai was a member of the OUN Revolutionary Directorate and took part in the second Great OUN Congress. In 1941–43 he actively participated in partisan operations against Nazi German forces. From 1941 he headed the OUN's Military Staff, working to discover the German command's tactical plans, creating weapons and supply depots, and training officer cadres for a Ukrainian army. 
In 1943 Hrytsai was arrested by the German Gestapo, but was freed by a Ukrainian Insurgent Army ("UPA") attack on the prison. He directed "UPA"'s General Staff. In 1945 he became "UPA" Chief of Staff and received the rank of general.
In 1945 together with OUN Directorate member Taras Maivski, while carrying out assignments for the Ukrainian Chief Council of Liberation, he fell into a Czech police trap while crossing the Czech-German border. After being tortured, he was executed at the Prague prison.