 Complete the following phrase:  Both brothers returned to the Commonwealth in 1648. Upon receiving the news of the death of king Władysław IV Vasa and the hostilities of the Khmelnytsky Uprising, they volunteered for the army. They both fought in the siege of Zamość. They founded and commanded their own banners chorągiew of cavalry one light, cossack, and one heavy, of Polish hussars. Soon, the fortunes of war separated the brothers. In 1649, Jakub fought in the Battle of Zboriv. In 1652, Marek died in Tatar captivity after his capture at the Battle of Batih. John was promoted to the rank of pułkownik and fought with distinction in the 