In the year 1626–1629 Poland was at war with Sweden. This fact is well known as dominium Maris Baltici. Gustav II Adolf, the king of Sweden, was looking for a pretext for attacking the southern coast of Baltic See. The best argument to prepare this invasion was the Polish king’s (Sigismund III Vasa) plans for the recovery the Swedish crown. At the beginning of this war the Polish king personally led the military but the first defeats forced Sigismund to transfer command Stanislaus Koniecpolski. Hetman Koniecpolski was very experienced commander, considering his young age. He was gaining experience by fighting against Cossacks and Tatars. Numerous wars turned in Ukraine have been very useful in the fight against the Swedes.The writings of St...