6. Nazi Germany’s Invasion of Poland (1939)
On September 1, 1939, Nazi Germany launched a swift and unexpected blitzkrieg against Poland, employing rapid, coordinated attacks that overwhelmed Polish defenses. This invasion marked the beginning of World War II, as Britain and France declared war on Germany two days later. The effectiveness of Germany’s mechanized warfare tactics stunned the world and led to the rapid fall of Poland. The invasion also set the stage for the partitioning of Poland between Germany and the Soviet Union, as outlined in the secret protocol of the German-Soviet Pact. For a detailed account, refer to the United States Holocaust Memorial Museum’s overview (ushmm.org).
