Skip to content
Curated category

Germany–Poland relations (1918–1939)

  • East PrussiaIn the 13th century, Duke Konrad I of Masovia invited the Teutonic Knights to conquer the native Old Prussians. These crusading orders established a monastic…
  • Operation HimmlerHeinrich Himmler conceived a strategy to manufacture evidence of Polish aggression before the German invasion. Reinhard Heydrich supervised the project while…
  • Locarno TreatiesGermany lost 13% of its European territory and 12% of its population under the Treaty of Versailles. These losses went primarily to France, which regained…
  • German–Polish declaration of non-aggressionThe Locarno Treaties of 1925 reshaped European security in ways that left Poland exposed. France agreed never to send forces into Germany outside its own…
  • Trans-OlzaThe history of the Trans-Olza region began in 1918 when, after the collapse of Austria-Hungary, the newly-established Czechoslovakia claimed the area.
  • Polish CorridorThe word corridor first appeared in Polish political discourse during the early 1920s, according to German historian Hartmut Boockmann.