Greater Poland uprising (1918–1919)
| Greater Poland uprising | |||||||||
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| Part of the aftermath of World War I and Revolutions of 1917–1923 | |||||||||
Polish soldiers in trenches on the Polish–German front, January 1919 | |||||||||
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| Belligerents | |||||||||
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Supported by: Poland | Germany | ||||||||
| Commanders and leaders | |||||||||
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Stanisław Taczak Józef Dowbor-Muśnicki | Friedrich Polach | ||||||||
| Units involved | |||||||||
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People's Guard P.M.O Greater Poland Army | |||||||||
| Strength | |||||||||
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Before the uprising: 10,000 Beginning of January 1919: 27,000 End of the uprising: 100,000 |
Beginning of the uprising: 2,500–4,500 End of the uprising: 20,000–30,000 | ||||||||
| Casualties and losses | |||||||||
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~2,000 killed 6,000 wounded |
300–600 killed 2,500–5,000 wounded | ||||||||
| Territorial evolution of Poland in the 20th century |
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The Greater Poland uprising of 1918–1919, or Wielkopolska uprising of 1918–1919 (Polish: powstanie wielkopolskie 1918–1919 roku; German: Großpolnischer Aufstand) or Poznań War was a military insurrection of Poles in the Greater Poland region (German: Grand Duchy of Posen or Provinz Posen) against German rule. The uprising had a significant effect on the Treaty of Versailles, which granted a reconstituted Second Polish Republic the area won by the Polish insurrectionists. The region had been part of the Kingdom of Poland and then Polish–Lithuanian Commonwealth before the 1793 Second Partition of Poland when it was annexed by the German Kingdom of Prussia. It had also, following the 1806 Greater Poland uprising, been part of the Duchy of Warsaw (1807–1815), a French client state during the Napoleonic Wars.