1939 ⟶ Invasion of Poland: Outbreak of World War II

September 1 – October: Nazi invasion of Poland triggers Worl...
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Year
1919
1939
1940
1944

⚔️ Polish–Soviet War Begins

February 14: Polish–Soviet War begins.⟶
Polish–Soviet War Begins (1919)
WarfareSoviet UnionInterwar PeriodTerritorial DisputesNationalism
PolandPolandSoviet UnionSoviet Union

💣 Invasion of Poland: Outbreak of World War II

September 1 – October: Nazi invasion of Poland triggers World War II in Europe. Soviet invasion of Poland begins 16 days later.⟶
Invasion of Poland: Outbreak of World War II (1939)
World War IIInvasionSoviet UnionAggressionTotalitarianismEastern FrontAppeasement
PolandPolandGermanyGermanySoviet UnionSoviet Union

⚔️ Winter War Ends: Soviet Union Victorious over Finland

March 13: The Winter War between Soviet Union and Finland ends with a costly victory for the USSR.⟶
Winter War Ends: Soviet Union Victorious over Finland (1940)
World War IISoviet UnionEastern FrontMilitary ConflictTerritorial DisputesTotalitarianism
Soviet UnionSoviet UnionFinlandFinland

🛡️ Siege of Leningrad Ends: Soviet Victory

January 27: The Siege of Leningrad ends with Soviet victory after over a million deaths.⟶
Siege of Leningrad Ends: Soviet Victory (1944)
World War IIEastern FrontSiegeSoviet UnionMilitary HistoryTotal WarAtrocity
Soviet UnionSoviet UnionGermanyGermany

💥 Operation Bagration: Soviet Offensive Cripples Germany

June – August: Soviet forces launch Operation Bagration on the Eastern Front, the biggest defeat in German military history.⟶
Operation Bagration: Soviet Offensive Cripples Germany (1944)
World War IIEastern FrontSoviet UnionMilitary OffensiveWarfare
Soviet UnionSoviet UnionGermanyGermanyBelarusBelarusPolandPolandLithuaniaLithuaniaLatviaLatviaEstoniaEstonia

🕊️ Continuation War Ends

September 19: The Continuation War ends.⟶
Continuation War Ends (1944)
World War IISoviet UnionEastern FrontWarfareMilitary ConflictNationalism
FinlandFinlandSoviet UnionSoviet UnionGermanyGermany