17 March 1938DemonstrationsJosef Beck
Anti-Jewish riots broke out in Dabrowa, Poland
Historical records for Poland in 1938, rendered directly from the World History Database and ordered by month, day and event.
Anti-Jewish riots broke out in Dabrowa, Poland
The Polish Government presents an ultimatum to Lithuania to establish diplomatic ties
Poland forces Lithuania to open its borders
Demands immediate Czech withdrawal from Teschen
Warsaw denounces the 1925 military Treaty with Czechoslovakia
Beck's government pressed Czechoslovakia to surrender the Teschen district during the immediate aftermath of Munich.
Poland occupied the Teschen district after Czechoslovakia accepted a Polish ultimatum.
Designs the Polish bomba kryptologiczna to automate part of the search for Enigma daily settings.
Designs perforated sheets that can identify Enigma settings despite increasingly complex plugboard connections.
Tries to assassinate the German Ambassador in Paris but shoots Ernst vom Rath
Used by the Nazis as another excuse for Kristallnacht
Poland renews a non-aggression pact with the USSR to protect against a German invasion
Adapts Polish methods after Germany adds two extra rotors, greatly increasing possible Enigma rotor orders.
Graduates from secondary school
Creates a manual technique that remains useful after German cipher procedures change.
Develops perforated sheets for identifying Enigma message settings.
This page is generated from stored World History Database records matching the exact country and year shown above. Exact duplicate display records are collapsed. Records without a month are listed after the monthly sections. Source provenance varies by record; formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.