World War II (WWII) bloodiest war in our history which last for 6 years. It was initiated by Germany when they invaded in Poland in 1939 (1st September).

Timeline Of World War 2
August 23 – Germany and the Soviet Union sign the
Nazi-Soviet Non-Aggression Pact
September 1 – Germany invades Poland, starting World War II
September 3 – Britain and France declare war on Germany
September – Battle of the Atlantic begins
1940


May – Auschwitz established
May 10 – Germany invades France, Belgium, and the Netherlands
May 26 – Evacuation begins of Allied troops from Dunkirk, France
June 10 – Italy declares war on France and Great Britain
June 22 – France surrenders to Germany
July 10 – Battle of Britain begins
September 16 – The United States begins its first peacetime draft
1941

March 11 – U.S. President Franklin D. Roosevelt signs the Lend-Lease bill
May 24 – The British ship Hood is sunk by Germany’s Bismarck
May 27 – The Bismarck is sunk
June 22 – Germany invades the Soviet Union (Operation Barbarossa)
August 9 – Atlantic Conference begins
September 8 – Siege of Leningrad begins
December 7 – The Japanese launch a sneak attack on Pearl Harbor, Hawaii
December 11 – Germany and Italy declare war on the United States; then the United States declares war on Germany and Italy
1942

January 20 – The Wannsee Conference
February 19 – Roosevelt issues Executive Order 9066, which allows the internment of Japanese Americans
April 18 – The Doolittle Raid on Japan
June 3 – The Battle of Midway begins
July 1 – First Battle of El Alamein begins
July 6 – Anne Frank and her family go into hiding
August 2 – Guadalcanal Campaign begins
August 21 – Battle of Stalingrad begins
October 23 – Second Battle of El Alamein begins
November 8 – The Allies invade North Africa (Operation Torch)
1943

January 14 – Casablanca Conference begins
February 2 – The Germans surrender at Stalingrad, Soviet Union
April 19 – The Warsaw Ghetto Uprising begins
July 5 – Battle of Kursk begins
July 25 – Mussolini resigns
September 3 – Italy surrenders
November 28 – Tehran Conference begins
1944

January 27 – After 900 days, the Siege of Leningrad is finally over
June 6 – D-Day
June 19 – Battle of the Philippine Sea
July 20 – Assassination attempt against Hitler fails
August 4 – Anne Frank and her family are discovered and arrested
August 25 – The Allies liberate Paris
October 23 – Battle of Leyte Gulf begins
December 16 – Battle of the Bulge begins
1945

February 4 – Yalta Conference begins
February 13 – Allies begin bombing Dresden
February 19 – Battle of Iwo Jima begins
April 1 – Battle of Okinawa
April 12 – Franklin D. Roosevelt dies
April 16 – Battle of Berlin begins
April 28 – Mussolini is hanged by Italian partisans
April 30 – Adolf Hitler commits suicide
May 7 – Germany signs an unconditional surrender
July 17 – Potsdam Conference begins
August 6 – The United States drops the first atomic bomb on Hiroshima, Japan
August 9 – The United States drops a second atomic bomb on Nagasaki, Japa