1518

Siege of Polotsk. The Siege of Polotsk was laid in 1518 by forces of the Grand Duchy of Moscow on Polotsk during the Fourth Muscovite–Lithuanian War (1512–1522). The Lithuanians defended the city. According to a legend, Prince Casimir Jagiellon appeared before the Lithuanian troops and helped them to achieve victory. It was the first miracle attributed to Casimir, which perpetuated his cult and led to his eventual canonization.

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