Major Events of World War II. When Hitler invaded Poland in September 1939, France and Britain declared war on Germany. After conquering Poland, Germany attacked France. France fell in June 1940, and soon the Nazis overran most of the rest of Europe and North Africa.
When Hitler invaded Poland in September 1939, France and Britain declared war on Germany. After conquering Poland, Germany attacked France. France fell in June 1940, and soon the Nazis overran most of the rest of Europe and North Africa.
