In the
Early Middle Ages, a
Slavic stronghold was built in present-day Koronowo. It was included into the emerging Polish state in the 10th century and finally integrated with it in the 12th century. A significant
battle took place nearby in 1410 during the
Polish–Lithuanian–Teutonic War, in which
Poland defeated the
Teutonic Knights. King
Casimir IV of Poland by virtue of
privileges of 1476 and 1484, established two annual
fairs and a weekly market. Koronowo (
World War II) 13 Polish soldiers were killed on September 2, 1939, during the German
invasion of Poland, which started
World War II. In mid-September 1939, the German
Einsatzgruppe IV entered the town to commit
atrocities against the population. During the
German occupation, the
Polish population was subject to mass arrests,
expulsions and massacres. The Germans established a prison for Poles, in which 606 people died. Among the victims were local merchants, craftsmen and pre-war mayor Maksymilian Talaśka. The Germans burned the bodies of the victims in attempt to cover up the crime. Koronowo was captured by the Soviets in January 1945 and restored to Poland. == Sport ==