A secret police agent

1944 - 1945 - The liberation of Czechoslovakia, 5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 1989 - The fall of the iron curtain, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

1 November 1955 – 30 April 1975 - Vietnam War, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 1. 1. 1977 - Declaration of Chart 77, 1989 - The fall of the iron curtain, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

5. – 9. 5. 1945 - Prague Uprising, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 1. 1. 1977 - Declaration of Chart 77, 1948 - 1955 - Politic lawsuit in the Stalin age, 17. 11. 1989 - Demonstration at Národní třída and 4 more anniversaries

15. 3. 1939 - The Nazi occupation of ČSR, 18. 4. - 10. 5. 1945 - osvobození západní části ČSR americkou armádou, 30. 5. 1945 – 29. 10. 1946 - Withdrawal of Germans from Czechoslovakia, 1948 - 1955 - Politic lawsuit in the Stalin age, 21. 8. 1968 - Invasion of the Warsaw Pact troops and 1 more anniversaries

1941 - 1945 - Transports to the concentration camps, 1945 - The liberation of the concentration camps

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1989 - The fall of the iron curtain, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 1. 1. 1977 - Declaration of Chart 77

1948 - 1955 - Politic lawsuit in the Stalin age, 24. 4. 1978 – Formation of Committee for the Defence of the Unjustly Prosecuted

17. 11. 1939 – Closure of Czech universities, 1948 - 1955 - Politic lawsuit in the Stalin age, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia