World War II: The German occupation of Paris begins.

World War II or the Second World War was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks and aircraft played major roles, enabling the strategic bombing of cities and delivery of the first and only nuclear weapons ever used in war. World War II is the deadliest conflict in history, causing the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

The city of Paris started mobilizing for war in September 1939, when Nazi Germany and the Soviet Union attacked Poland, but the war seemed far away until May 10th 1940, when the Germans attacked France and quickly defeated the French army. The French government departed Paris on June 10th, and the Germans occupied the city on June 14th. During the occupation, the French government moved to Vichy, and Paris was governed by the German military and by French officials approved by the Germans. For Parisians, the occupation was a series of frustrations, shortages and humiliations. A curfew was in effect from nine in the evening until five in the morning; at night, the city went dark. Rationing of food, tobacco, coal and clothing was imposed from September 1940. Every year the supplies grew more scarce and the prices higher. A million Parisians left the city for the provinces, where there was more food and fewer Germans. The French press and radio contained only German propaganda.