Later that year Czarniecki received territories from the king, along with the office of Crown oboźny. In 1653 he led a unit to Ukraine, ransacking much of the Cossack-held lands, although the attrition among the troops was high. During that campaign Czarniecki was wounded at Monastyryska. He continued his suppression campaign in 1654, and the following January took part in the battle of Okhmativ. In May 1655 he was called from Ukraine to Warsaw, as the king John Casimir Vasa, respected his experience and requested his presence at a new war council, convened to discuss the looming thread of the war with Sweden. At that time his reputation was significant; Sejm often passed resolutions applauding him for his efforts to reclaim Ukraine, and he was even held in much consideration by the Ottomans, then temporarily allied with the Commonwealth. On 14 May 1655 he received the office of the castellan of Kiev, a position that made him a member of the Senate of Poland.