Soviet invasion of Poland

The Soviet invasion of Poland was a military conflict by the Soviet Union without a formal declaration of war. On 17 September 1939, the Soviet Union invaded Poland from the east, 16 days after Nazi Germany invaded Poland from the west. Subsequent military operations lasted for the following 20 days and ended on 6 October 1939 with the two-way division and annexation of the entire territory of the Second Polish Republic by Nazi Germany and the Soviet Union. This division is sometimes called the Fourth Partition of Poland. The Soviet invasion of Poland was indirectly indicated in the "secret protocol" of the Molotov–Ribbentrop Pact signed on 23 August 1939, which divided Poland into "spheres of influence" of the two powers. German and Soviet cooperation in the invasion of Poland has been described as co-belligerence.

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1939  Wikimedia, Wikidata
invasion, Soviet Union, Poland, 

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Location: 52, 23.8, KML, Cluster Map, Maps,
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1939-09-17T00:00:00Z

1939-10-06T00:00:00Z

1939 Soviet invasion of Poland

1792-07-23T00:00:00Z

1792-07-23T00:00:00Z

1792 Battle of Brest (1792)

1915-08-26T00:00:00Z

1915-08-26T00:00:00Z

1915 Unknown

1939-09-14T00:00:00Z

1939-09-17T00:00:00Z

1939 Battle of Brześć Litewski

1941-06-22T00:00:00Z

1941-06-29T00:00:00Z

1941 Defense of Brest Fortress

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Frameless

Bundesarchiv Bild 101I-013-0068-08, Polen, Treffen deutscher und sowjetischer Soldaten

Bundesarchiv Bild 101I-013-0068-20A, Polen, Treffen deutscher und sowjetischer Soldaten

Bundesarchiv Bild 101I-013-0068-33, Polen, Treffen deutscher und sowjetischer Soldaten

Soviet WWII propaganda poster urging vigilance. Note the villain in the shadow wearing a Polish parade uniform

Agresja nie wyzwolenie

The German-soviet Invasion of Poland, 1939 HU106367

Bundesarchiv Bild 101I-319-0013-26, Polen, Treffen dtsch. und sowjet. Militärs

Bundesarchiv Bild 183-H27343, Dtsch.-Sowjet. Grenz- u. Freundschaftsvertrag

Bundesarchiv Bild 183-S52480, Dtsch.-Sowjet. Grenz- u. Freundschaftsvertrag (cropped)

Radoszkowicze (1939)

Type	Subtype	Date	Description	Notes	Source
event	armed conflict		Battle of Brześć	Russian Soviet Federative Socialist Republic, Władysław Sikorski, battle, Second Polish Republic, Western Army, Grupa Poleska, Nikolai Sollogub	Wikidata
event	armed conflict	1792	Battle of Brest (1792)	Russian Empire, Polish–Lithuanian Commonwealth, battle	Wikidata
event	armed conflict	1915	Unknown	battle	Wikidata
event	armed conflict	1939	Battle of Brześć Litewski	battle, siege	Wikidata
event	armed conflict	1939	Soviet invasion of Poland	invasion, Poland, Soviet Union	Wikidata
event	armed conflict	1941	Defense of Brest Fortress	siege	Wikidata
site	artillery battery		bateria międzyfortowa Lebiedziew	artillery battery	Wikidata
site	artillery battery		Bazyĺjanskaja Battery	artillery battery	Wikidata
site	fort		Fort Kobylany	fort	Wikidata
site	fort		Fort Koroszczyn	fort	Wikidata
site	fort		Fort Łobaczew	fort	Wikidata
site	fort		Fort Terespol	fort	Wikidata
site	fort		Fort V	fort	Wikidata
site	fort	1836	Brest Fortress	architectural landmark, tourist attraction, fortress, museum	Wikidata
site	fort	1879	Fort IV	fort	Wikidata
site	fort	1910	Fort Ł - Lebiedziew	fort	Wikidata
commons	image		Bundesarchiv Bild 101I-013-0068-08, Polen, Treffen deutscher und sowjetischer Soldaten		Commons
commons	image		Bundesarchiv Bild 101I-013-0068-20A, Polen, Treffen deutscher und sowjetischer Soldaten		Commons
commons	image		Bundesarchiv Bild 101I-013-0068-33, Polen, Treffen deutscher und sowjetischer Soldaten		Commons
commons	image		Soviet WWII propaganda poster urging vigilance. Note the villain in the shadow wearing a Polish parade uniform		Commons
commons	image		Agresja nie wyzwolenie		Commons
commons	image		The German-soviet Invasion of Poland, 1939 HU106367		Commons
commons	image		Bundesarchiv Bild 101I-319-0013-26, Polen, Treffen dtsch. und sowjet. Militärs		Commons
commons	image		Bundesarchiv Bild 183-H27343, Dtsch.-Sowjet. Grenz- u. Freundschaftsvertrag		Commons
commons	image		Bundesarchiv Bild 183-S52480, Dtsch.-Sowjet. Grenz- u. Freundschaftsvertrag (cropped)		Commons
commons	image		Radoszkowicze (1939)		Commons