Today in History

What happened today in history? Important events, births and deaths.

31 August 2025

Start of World War II

Historical Importance and Background

The year 1939 marks the beginning of World War II, a dark period in world history. The outbreak of this war, triggered by Nazi Germany's invasion of Poland, would last for years and deeply influence world history.

By the late 1930s, political tensions had escalated in Europe. Nazi Germany under the leadership of Adolf Hitler accelerated its expansionist policies, causing unease among other European states. Discontent caused by the Treaty of Versailles and Germany's territorial demands heightened the tension in the region.

During this time, Hitler's aggressive policies and Germany's rearmament efforts were causing concern on the international stage. One of the greatest conflicts in history was inevitably approaching.

Development of Events

Gleiwitz Incident and Invasion of Poland

On August 31, 1939, Nazi Germany staged a fake attack on its own radio stations near the Polish border. This incident served as a pretext to attack Poland, and the next day, the German army invaded Poland. This move is considered the official start of World War II.

Expansion of the War and Transition to a World War

Following Germany's invasion of Poland, Britain and France declared war on Germany. This situation led to World War II evolving from a European conflict into a global one. Japan's expansion in the Pacific further broadened the scope of the war.

Consequences and Effects

Short-Term Effects: The invasion of Poland caused great concern worldwide and rapidly led to the spread of the war. Increased civilian casualties and economic uncertainties were felt in the short term.

Long-Term Results: World War II resulted in the loss of millions of lives, massive destruction, and a reshaping of the world map. The post-war world politics and economy underwent significant changes.

Social and Political Changes: The war caused a profound rupture in international relations. New institutions such as the United Nations were established, emphasizing the importance of international cooperation. Simultaneously, the war's impact on humanity was thoroughly examined.

Historical Significance and Reflections to Today

Impacts on the Modern World: World War II remains an unforgettable turning point in world history. This major conflict in international relations continues to shape global peace and security today.

Relevance Today: The legacy of World War II significantly influences global policies and understanding how the post-war order was established is crucial. The lessons learned from the war affect the measures taken by the international community for peace and stability.

Lessons Learned: World War II serves as an important warning to humanity about the consequences of war and hatred. The significance of understanding, cooperation, and peace among societies has been emphasized, highlighting the necessity of diplomacy and compromise in international relations.

Frequently Asked Questions


Historical Importance and Background


The year 1939 marks the beginning of World War II, a dark period in world history. The outbreak of this war, triggered by Nazi Germany's invasion of Poland, wou...

Start of World War II 1939 took place in

Start of World War II happened in Germany

Start of World War II is a historically significant event that 1939 marked an important turning point in world history