The 5 members of the Warsaw Pact decided to make a military intervention in Czechoslovakia and overthrow the authority of President Ludvik Svoboda.At dawn of the 22nd August troops from the Soviet forces, Poland, Hungagy and East Germany crossed in Czech territory in a camouflage of bringing help to another Socialist population.Young and old formed a resistance movement and supported Dubcek and Svoboda, and opposed the Russian might.