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Finland WW2 Timeline

Authored By Dan Alex | Last Updated: 3/16/2015

The Nordic country of Finland fought two major wars against the Soviet Union during World War 2.

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There are a total of 24 WW2 Finland Timeline Events. Entries are listed below by date of occurrence ascending and are gathered from the overall SwwH site database as they relate to their particular series events.


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1939
Sunday
November 26th

With worsening relations between Finland and the Soviet Union, the Soviets pull out of their non-aggression pact with Finland.

1939
Thursday
November 30th

Five Soviet armies cross into Finland, beginning the Winter War.

1939
Friday
December 1st

The Soviet Union installs a Finnish-Soviet puppet government in Terijoki to be led by Otto Kuusinen.

1939
Saturday
December 2nd

The Finnish government seeks assistance from the League of Nations.

1939
Tuesday
December 5th

After some initial advances, the Soviet Army if forced to stop by the Finnish defenses at the Mannerheim Line.

1939
Saturday
December 9th

As the Finnish winter worsens, Soviet attacks on Helsinki stall.

1939
Saturday
December 9th

The Soviet 44th and 163rd Divisions take the Finnish town of Soumussalmi.

1939
Friday
December 15th

The deteriorating conditions of a Finnish winter protect Helsinki from additional Soviet attacks.

1939
Friday
December 15th

The Mannerheim Line holds as Soviet Army elements are kept at bay.

1939
Friday
December 15th

Valliant Finnish forces repel the Soviet Army out of Soumussalmi, retaking the town.

1939
Friday
December 15th

The Soviet 14th Army takes Petsamo.

1939
Friday
December 15th

Finnish defenders keep the town of Nautsi from falling under Soviet control.

1939
Sunday
December 17th - December 31st

Finnish Army elements cross into Soviet Karelia, unleashing hell on the Russian 44th and 163rd Divisions. Some 27,000 Russian soldiers are killed.

1940
Tuesday
January 2nd

A new Soviet offensive on the Karelian isthmus fails.

1940
Sunday
January 7th

Stalin appoints a new commander to oversee the Winter War - General Semyon Timoshenko.

1940
Sunday
January 28th

Finnish ground forces recover territory from the Soviet 54th Division at Kuhmo.

1940
Thursday
February 1st

The Soviets enact a new offensive against Finnish positions along the Mannerheim Line, beginning with artillery attack accounting for some 300,000 shells.

1940
Monday
February 5th

The Allied Supreme War Council agrees to come to the aid of Finland and Norway - if only to protect valuable Swedish ore from falling to the Germans.

1940
Sunday
February 11th - February 17th

The Soviet Army breaks through the defenses at the Mannerheim Line at Summa. Finnish Army units retreat.

1940
Friday
February 23rd

The Soviet government delivers terms of surrender to the Finnish government, claiming the Karelian isthmus and Lake Lagoda as their own. The Finns are required to defend the Soviet Union from the north if the empire is attacked.

1940
Tuesday
March 5th

Finland responds to the Soviet surrender overture with negotiations.

1940
Monday
March 11th

The Finns agree to the Treaty of Moscow with the Soviets. 10 percent of Finnish territory is ceded to the invaders at the cost of 25,000 Finns to 200,000 Soviets.

1940
Tuesday
March 12th

After months of fighting and countless lives lost on both sides, the Finnish government officially accepts the surrender terms of the Russian proposal in an internal vote numbering 145 to 3.

1940
Wednesday
March 20th

French PM Daladier resigns his post after the failure to save Finland.