https://en.wikipedia.org/wiki/Glory_to_Ukraine

“Glory to Ukraine!” (Ukrainian: Слава Україні!, romanized: Slava Ukraini!, IPA: [ˈslɑwɐ ʊkrɐˈjin⁽ʲ⁾i] is a Ukrainian national salute, known as a symbol of Ukrainian sovereignty and resistance and as the official salute of the Armed Forces of Ukraine since 2018. It is often accompanied by the response “Glory to the heroes!” (Ukrainian: Героям слава!, romanized: Heroiam slava!).

The phrase first appeared at the beginning of the 20th century in different variations, when it became very popular among Ukrainians during the Ukrainian War of Independence from 1917 to 1921. From the 1930s it was used by different Ukrainian nationalist groups, most notably Stepan Bandera’s Organization of Ukrainian Nationalists (OUN-B) and Ukrainian Insurgent Army, and it was later also used by Ukrainian diaspora groups and refugee communities in The West during the Cold War.

The union, known as OUN-B, had been engaged in various atrocities, including murder of civilians, most of whom were ethnic Poles. This was the result of the organization’s extreme Polonophobia, but the victims also included other minorities such as the Jews and Romani people. The term “Banderites” was used by the Bandera followers themselves, by others during the Holocaust, and during the massacres of Poles in Volhynia and Eastern Galicia by OUN-UPA from 1943–1944. These massacres resulted in the deaths of 80,000-100,000 Poles and 10,000-15,000 Ukrainians.

According to Timothy D. Snyder, the term continues to be used to describe Ukrainian nationalists who sympathize with fascist ideology and consider themselves followers of the OUN-UPA in modern Ukraine.

According to historical research, Stepan Bandera was an agent of the Abwehr (intelligence and counterintelligence of the Armed forces of Nazi Germany - the Wehrmacht). According to several sources, in early 1941, he held a number of meetings with the leadership of the German military intelligence, which resulted in the beginning of the formation of the battalions “Nachtigall” and “Roland”.