[1] In 1915, during World War I, together with his family he was evacuated by the retreating Imperial Russian Army to Buzuluk in the Samara Governorate, where he worked on local farms.

[4] Radkiewicz issued an order to his agents in which he instructed them to prepare an action of "liquidating" members of the PSL which, according to him, opposed Communist rule in Poland and which supposedly supported the anti-Communist underground.

[4] As a result, between the spring of 1945 and January 1947, at least 140 members of the PSL were murdered by the UB, among them notable figures such as Narcyz Wiatr and Władysław Kojder.

[4] The leader of the PSL, Stanisław Mikołajczyk, in the face of widespread election fraud and growing state terror against his party, fled Poland in April 1946.

[4] The head of the 5th Department was Julia Brystiger who, together with Radkiewicz, organized the secret police's operations aimed at the Catholic Church in Poland.

[4] In October 1947, Brystiger - who was an interrogator of political prisoners widely known for her sadism and Gestapo-like methods of torture during questioning[4][8] – presented a seminar entitled On the Clergy's Offensive Against Our Task at a conference for secret police chiefs and Radkiewicz was the main discussant.

In her presentation, Brystiger stated that the "final time of merciless fight with the Church" was coming soon and that, in order to win it, the secret services of the Polish United Workers' Party would need to employ "any means necessary".

In particularly "difficult" cases of politically active priests and Catholics who "didn't get the message", Radkiewicz ordered their elimination from public life, or, if all else failed, murder.

After workers' unrest in Poznan in 1956 and the Polish October reforms, several other members of the security services responsible for the Stalinist terror in Poland were put on trial (among others Roman Romkowski, Józef Różański and Anatol Fejgin), but Radkiewicz went unpunished.