

While the Wehrmacht crushes the allied armies in France, British officials prepare to face Adolf Hitler; on May 28, 1940, Prime Minister Winston Churchill finally convinces his colleagues to fight.

After Paris falls to the Nazis, French Prime Minister Henri Pétain plans to sign an armistice with Nazi Germany on June 16, 1940, but Gen. Charles de Gaulle secedes and rebels against the policy.

On June 22, 1941, Adolf Hitler launches a military offensive called Operation Barbarossa against the Soviet Union.