 Complete the following phrase:  He was the Elector of King Władysław IV representing the Bratslav province in 1632. He was also the Elector of King John II Casimir in 1648 from the province of Podolia. During the Khmelnytsky Uprising, it is believed that Potocki saved the kings life near the town of Zborów. In 1652 he was appointed the Field Hetman of the Commonwealth and two years later he commanded the Polish army against the Russians and Cossacks. In 1655 he fought and won the 