Second World War By Kasey Acacia Period: Jan 1, 1939 to Dec 31, 1945 World War II Mar 15, 1939 Germany take Czechoslovakia Mar 28, 1939 Spanish Civil war ends May 22, 1939 Nazis sign 'Pact of Steel' with Italy Aug 23, 1939 Nazis and Soviets sign Pact Aug 25, 1939 Britain and Poland sign a Mutual Assistance Treaty Aug 31, 1939 British fleet mobilizes Civilian evacuations begin from London. Sep 1, 1939 Nazis invade Poland Sep 3, 1939 Britain, France, Australia and New Zealand declare war on Germany Sep 4, 1939 British Royal Air Force attacks the German Navy Sep 5, 1939 United States proclaims its neutrality Sep 5, 1939 German troops cross the Vistula River in Poland Sep 10, 1939 Canada declares war on Germany Sep 10, 1939 Battle of the Atlantic begins Sep 17, 1939 Soviets invade Poland Sep 27, 1939 Warsaw surrenders to Nazis Reinhard Heydrich becomes the leader of new Reich Main Security Office (RSHA) Sep 29, 1939 Nazis and Soviets divide up Poland Nov 8, 1939 Assassination attempt on Hitler fails Nov 30, 1939 Soviets attack Finland Dec 14, 1939 Soviet Union expelled from the League of Nations Mar 12, 1940 Finland signs a peace treaty with Soviets Apr 9, 1940 Nazis invade Denmark and Norway May 15, 1940 Holland surrenders to the Nazis May 28, 1940 Belgium surrenders to the Nazis Jun 10, 1940 Norway surrenders to the Nazis