The Bleiburg repatriations occurred in May 1945, at the end of World War II in Europe. Tens of thousands of soldiers and civilians associated with the Axis powers fled Yugoslavia to Austria as the Soviet Union and Yugoslav Partisans took control. When they reached Austria, the British refused to accept their surrender and directed them to the Partisans instead. The prisoners of war were subjected to forced marches, together with columns captured by other Partisans in Yugoslavia. Tens of thousands were executed; others were taken to forced labor camps, where more died from harsh conditions. The events are named for the Carinthian border town of Bleiburg, where the initial repatriation was carried out.
On 3 May 1945, the government of the Independent State of Croatia, a fascist puppet state established in parts of German-occupied Yugoslavia, decided to flee to Austria.
Wikipedia https://en.wikipedia.org/wiki/Bleiburg_repatriations
Address 9150, Austria
Coordinates 46°34'4.456" N 14°49'3.261" E