One of the most tragic events during the Revolution of 1956 in Hungary was the volley-firing in Mosonmagyaróvár. On 26 October 1956, 1200-2000 men unarmed arrived at the barracks of the immigration officers singing the national anthem, reciting the "Szózat" and singing Kossuth songs. Immigration officers for the AVO instructed by the captain István Dudás set up machine guns and light machine guns right away.