What happened during WWII?

Germany Invades Poland

Sep 1, 1939

Germany breaks through Poland and advances to Warsaw in order to regain lost territory. This event marks the start of WWII.

The Soviet Union Invades Poland

Sep 17, 1939

Without any former declaration of war, the Soviet Union marches into the east of Poland 16 after Germany had invaded it from the west.

Warsaw Captured

Sep 27, 1939

After being deprived of water, food, and electricity, and with vast destruction, Warsaw surrenders to Germany.

United Kingdom Wins First Sea Battle

Dec 13, 1939

Just days after the British Royal Navy had suffered, as the HMS Duchess collided with the HMS Barham, Britan corned the imposing German warship Graf Spee and won the first sea battle.

Norway is Invaded

Apr 8, 1940

Later, Germany invades Norway for various reasons. To secure ice-free harbors, secure availability of iron ore, reinforce propaganda, and others.

U.S. Joins the War

Dec 7, 1941

After the Japanese attack on Pearl Harbor, the U.S.'s hesitation to join the war ends.