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World War II Key Events

Major events, battles, and turning points of WWII

25 cards · history

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Cards (25)

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Molotov–Ribbentrop PactAug 23, 1939; German–Soviet non-aggression pact
Contained secret protocols dividing Eastern Europe into spheres.
Invasion of PolandSep 1, 1939; Germany invades Poland; war begins in Europe
Blitzkrieg overwhelmed Poland; the USSR invaded from the east on Sep 17.
Britain and France declare warSep 3, 1939; UK and France declare war on Germany
Marked the start of the wider European conflict against Nazi Germany.
Fall of FranceJun 22, 1940; France signs armistice with Germany
Germany occupied northern/Atlantic France; the Vichy regime formed.
Battle of BritainJul 10–Oct 31, 1940; RAF defeats Luftwaffe over Britain
First major campaign fought entirely by air forces; invasion averted.
Lend-Lease ActMar 11, 1941; U.S. aid program for Allies
Roosevelt’s “arsenal of democracy” supplied arms, food, and ships.
Operation BarbarossaJun 22, 1941; Germany invades the Soviet Union
Opened the Eastern Front; war became one of annihilation.
Pearl HarborDec 7, 1941; Japan attacks U.S. Pacific Fleet
Triggered U.S. entry into World War II the next day.
Wannsee ConferenceJan 20, 1942; Nazi plan to coordinate the Final Solution
Senior Nazis organized deportation and mass murder of Europe’s Jews.
Battle of MidwayJun 4–7, 1942; decisive U.S. naval victory over Japan
Turned the tide in the Pacific; four Japanese carriers sunk.
Guadalcanal campaignAug 7, 1942–Feb 9, 1943; first major Allied offensive in Pacific
Secured Henderson Field and halted Japanese expansion.
Second Battle of El AlameinOct 23–Nov 11, 1942; Allied victory halts Axis in North Africa
Montgomery’s assault forced Axis retreat toward Tunisia.
Battle of StalingradAug 23, 1942–Feb 2, 1943; German 6th Army surrenders
Turning point on the Eastern Front with catastrophic Axis losses.
Battle of KurskJul 5–Aug 23, 1943; largest tank battle; Soviet victory
Operation Citadel failed; Germany lost the strategic initiative.
D-DayJun 6, 1944; Allied invasion of Normandy, France
Largest seaborne invasion; opened the Western Front.
Battle of Leyte GulfOct 23–26, 1944; largest naval battle; U.S. retakes Philippines
Severed Japan’s oil lines; mass kamikaze attacks debuted.
Battle of the BulgeDec 16, 1944–Jan 25, 1945; last German offensive in the West
Allies held Bastogne; German reserves were exhausted.
Liberation of AuschwitzJan 27, 1945; Red Army liberates Auschwitz camp complex
Liberation exposed the scale of Nazi genocide.
Yalta ConferenceFeb 4–11, 1945; Allied leaders plan postwar Europe
Roosevelt, Churchill, and Stalin set occupation zones and UN plans.
Battle of OkinawaApr 1–Jun 22, 1945; brutal battle near Japan’s home islands
High casualties foreshadowed costs of invading Japan.
V-E DayMay 8, 1945; Germany surrenders in Europe
Celebrations marked the end of war in Europe.
Potsdam ConferenceJul 17–Aug 2, 1945; Allies issue Potsdam Declaration to Japan
Truman, Attlee/Churchill, and Stalin set postwar terms.
HiroshimaAug 6, 1945; U.S. drops atomic bomb on Hiroshima
First nuclear weapon used in war; massive destruction and casualties.
NagasakiAug 9, 1945; U.S. drops atomic bomb on Nagasaki
Second atomic bombing pushed Japan toward surrender.
V-J DaySep 2, 1945; Japan formally surrenders aboard USS Missouri
Ends World War II; Allied occupation of Japan begins.