The largest battle of the Silesian Uprisings, it determined the contest over a strategic hill in Upper Silesia through armed conflict before diplomacy fixed the final border.
Key Facts
- Dates
- May 21–26, 1921
- Conflict
- Third Silesian Uprising
- Location
- Annaberg hill, Upper Silesia, Weimar Germany
- Strategic feature
- Hill southeast of Oppeln (Opole)
- Outcome
- German Freikorps retook hill from Polish-Silesian forces
Location
Cause → Event → Consequence
During the Third Silesian Uprising of 1921, irregular Polish-Silesian units seized the Annaberg, a strategically important hill near the village of Annaberg O.S. in Upper Silesia. Control of the region was disputed between Germany and Poland following World War I, with the local population awaiting a plebiscite to determine sovereignty.
Between May 21 and 26, 1921, German Freikorps forces engaged the Polish-Silesian irregulars holding the Annaberg. In the largest single engagement of the Silesian Uprisings, the German forces succeeded in pushing the Polish units back and retaking the hill, ending Polish-Silesian control of the strategic position.
Although German Freikorps recaptured the Annaberg, the ultimate division of Upper Silesia was not settled by military means alone. The final border between Germany and Poland was determined through political and diplomatic negotiations, with the League of Nations eventually partitioning the region in 1921–1922.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
1 belligerent