The Polish–Bohemian War or Polish–Czech War (Polish: Wojna polsko-czeska) was fought between the Kingdom of Bohemia under John of Bohemia and the Kingdom of Poland under Casimir III the Great between 1345 and 1348. After fighting in Silesia and Lesser Poland, the Bohemian army advanced on Silesia and Lesser Poland in 1345, including on the Polish capital of Kraków. An armistice signed later that year held until 1348, when hostilities resumed. Although Poland had a slight military advantage, the war ended with the Treaty of Namysłów signed in November 1348. No territorial changes were made. The Poles renounced their claims to Silesia, and the Bohemians their claims to the Polish throne.