[1] After the start of World War II and the occupation of the Czech lands by Nazi Germany, he became involved with the anti-Nazi resistance, which led to his arrest by the Gestapo in 1942.

[1] After the coup d'état of February 1948, he became Minister of Justice; in this position, he introduced a number of reforms of the Czechoslovak judicial system and legal acts aimed at securing the political power of the KSČ.

[5] As Minister of Defence, Čepička proposed the construction of the Hotel International Prague, and envisioned a monument to the newly formed Fourth Czechoslovak Republic that would reinforce ties with the Soviet Union.

[citation needed] In his book Špión vypovídá, defector Josef Frolík stated that Minister of the Interior Rudolf Barák [cs] had Čepička followed on one occasion, and that he was caught in Prague's Letná Park talking to a young man.

[8] Čepička was selected as a scapegoat for the cult of personality around Gottwald, dismissed from all functions in 1956, and put into low importance position as head of the State Office for Inventions and Standardization.

[4][10] In 1969 Miroslav Švandrlík wrote Black Barons (Czech: Černí baroni), a satirical book officially published in 1990, after the fall of the Communist Party from power.