The ceremony, which has been organized by the Institute of National Remembrance, District of Pruszków and World Association of Home Army Soldiers, was held on March 27 in Pruszków.

On March 27, 1945 NKVD, the Soviet political police, arrested 16 leaders of the Polish Underground State, who arrived in Pruszków at the invitation of Soviet commanders to discuss implementation of the Yalta Conference arrangements. Among them there were Jan Stanisław Jankowski, Government Delegate at Home and Deputy Prime Minister, gen. Leopold Okulicki, the last Commander in Chief of the Home Army and Kazimierz Pużak, Chairman of the Council of National Unity.

Abduction of the Polish leaders was one of the elements of the new enslavement of Poland by the other totalitarian regime. This time is the regime was not Nazi but Soviet. This event has left no doubt that Stalin would respect the Yalta agreements, such as free elections in Poland. In parallel, the new authorities have already conducted an extensive campaign of repression, brutally suppressing all manifestations of social independence.

Members of legal Polish authorities recognized by Western countries were transported to Moscow in June 1945 and prosecuted in a show trial. People who led the Polish Underground State, which was part of the anti-Hitler coalition, were accused of collaborating with the Germans, with whom they fought the war, and fighting against the USSR, against which, as belonging to the camp of countries opposed to the Third Reich, they did not take up the fight.

The highest sentences were given to gen. Leopold Okulicki (10 years of imprisonment), Jan Stanislaw Jankowski (8 years) and his deputies, Adam Bień, Stanisław Jasiukowicz and Antoni Pajdak (5 years each). Gen. Leopold Okulicki, Jan Stanislaw Jankowski and Stanislaw Jasiukowicz did not live out the imprisonment. Kazimierz Pużak, after returning to Poland, was arrested again, tortured and killed in a communist prison.