September1939
September 1939 marked a pivotal month in the 20th century, primarily due to the outbreak of World War II. The month began with the invasion of Poland by Nazi Germany on September 1st. This unprovoked act of aggression triggered a cascade of international responses, as Great Britain and France had pledged to defend Poland's sovereignty. Consequently, on September 3rd, these two nations declared war on Germany, officially commencing what would become the largest and deadliest conflict in human history.
The early days of September saw rapid German advances into Poland, utilizing a new military doctrine known
While the war in Poland raged, the Western Front remained relatively quiet, a period later termed the