Due to the rising threat of Nazi Germany the Czechoslovak government decided to build a system of border fortifications. It's objective was to prevent the enemy (Germany and Hungary) to take key areas by a sudden attack before the mobilization of Czechoslovak army could be done and enable effective defense until the allies (France) would to help.
The full completion was planed in 1941-42. Until the Munich agreement, only cca 20% of heavy objects and 70% of light objects were completed. Chamberlain holds the paper containing the resolution to commit to peaceful methods signed by both Hitler and himself on his return from Germany in September 1938. ...
A provisional Czechoslovak government was established in the eastern Slovak town of Kosice on April 4, 1945.
The delegation was to mobilize the liberated local population to form a Czechoslovak army and to prepare for elections in cooperation with recently established national committees.
In July Czechoslovak representatives addressed the Potsdam Conference (the United States, Britain, and the Soviet Union) and presented plans for a humane and orderly transfer of the Sudeten German population.