when was czechoslovakia annexed by germany
For the 1968 invasion, see Warsaw Pact invasion of Czechoslovakia. The German occupation of Czechoslovakia (1938â1945) began with the National Socialist annexation of Czechoslovakia 's northern and western border regions, known collectively as the Sudetenland, under terms outlined by the Munich Agreement.he Munich Agreement stipulated that Czechoslovakia must cede Sudeten territory to Germany. German occupation of the Sudetenland would be completed by 10 October. An international commission representing Germany, Britain, France, Italy, and Czechoslovakia would supervise a plebiscite to determine the final frontier.