All tortures here were actually used by "Security Service" (a Polish Obsidian Order or Tal Shiar of those times) during Stalinism (1945-1956) in Poland. They tortured political prisoners and Home Army (Polish army, independent of Communists) officers.
The story (not tortures though) was inspired by a book by Kazimierz Moczarski: "Conversations with an Executioner", which I read years ago. Moczarski was an officer of Home Army, and he was kept in one cell with Juergen Stropp (who liquidated Warsaw Ghetto) and some Gestapo officer. Great, although disturbing book.