The 1345–1348 war between Poland and Bohemia ended Polish claims to Silesia and Bohemian claims to the Polish throne via the Treaty of Namysłów.
Key Facts
- Duration
- 1345–1348
- Concluding treaty
- Treaty of Namysłów, November 1348
- Key contested region
- Silesia and Lesser Poland
- Territorial changes
- None
- Polish capital threatened
- Kraków
Location
Cause → Event → Consequence
Long-standing rival claims underpinned the conflict: the Kingdom of Poland under Casimir III sought to assert sovereignty over Silesia, while the Kingdom of Bohemia under John of Bohemia maintained competing claims to the Polish throne, creating irreconcilable dynastic tensions between the two crowns.
Between 1345 and 1348, Bohemian and Polish forces fought across Silesia and Lesser Poland. The Bohemian army advanced as far as the Polish capital Kraków in 1345. An armistice was signed that year but broke down in 1348 when hostilities resumed before concluding with a formal peace.
The war ended with the Treaty of Namysłów in November 1348. Despite Poland holding a slight military advantage, no territory changed hands. Poland formally renounced its claims to Silesia, while Bohemia abandoned its claims to the Polish throne, stabilising the border between the two kingdoms.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Casimir III the Great.
Side B
1 belligerent
John of Bohemia.