Abstract
On the basis of archival research the author reconstructs the genesis of the planned violent intervention of the Czechoslovak armed forces against the population of the country. He outlines the preparation of plans for extraordinary security measures made after the Warsaw Pact invasion in August 1968, which remained valid until the collapse of the communist regime.
The study analyzes the problem of the role of the armed forces in the consolidation of the totalitarian regime. The author evaluates the participation of the army in the violent repression of the demonstrations against Soviet occupation in August 1969. With this, the army confirmed that after a wave of purges it became one of the pillars of the communist regime, which it remained until November 1989.