Second World War: Four days after the French government fled Paris, German forces occupied the French capital, a major accomplishment in the Fall Rot operation.

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 Battle of France, also known as the Western Campaign, the French Campaign and the Fall of France, during the Second World War was the German invasion of the Low Countries and France. The plan for the invasion of the Low Countries and France was called Fall Gelb. Fall Rot was planned to finish off the French and British after the evacuation at Dunkirk. The Low Countries and France were defeated and occupied by Axis troops down to the Demarcation line.

Fall Rot was the plan for a German military operation after the success of Fall Gelb, the Battle of France, an invasion of the Benelux countries and northern France. The Allied armies had been defeated and pushed back in the north to the Channel coast, which culminated in the Dunkirk evacuation. The operation to complete the conquest of France by the German Army began on 5 June 1940. Fall Rot began with a preliminary attack over the river Somme on the Channel Coast to the Seine, beginning on 5 June and the main offensive by Army Group A on 9 June further east over the river Aisne.