EN
By introducing the night of 12 to 13 December 1981, martial law, prepared since the summer of 1980, the communist authorities used the surprise and experienced relatively little resistance. Contributed to both the lack of adequate preparation by the "Solidarity", disbelief in the possibility of efficient conduct of such operations, operation of special services, as well as the concept of turning over 9-million union. We used the psychological factors - fatigue Society sometimes deliberately inspired conflicts, and stoked fears of Soviet intervention.