slavery to Lithuania where in a short time, at their own expense, he organized several Banners. Battling against Swedish forces, he reached up near Warsaw, where he was one of the royal commissioners that oversaw the takeover of the capital. He participated in the siege of Tykocin and the Battle of Warsaw (1656) after which the Swedish army again occupied the city. Then, on the King's orders, he moved with its banners into the Duchy of Prussia and Lithuania. On 8 October 1656, at the battle of Prostki, he completely smashed the Brandenburgian and Swedish armies, capturing Prince Bogusław Radziwiłł. The battle has been describe by Henryk Sienkiewicz's novel The Deluge. Another battle fought under his command, on 22 October 1656, was the Battle of Filipów however; it ended with a victory for the forces commanded by Field Marshal Gustaf Otto Stenbock, in the confusion of the battle the Prince Bogusław Radziwiłł managed to escape. In November 1656 at Wierzbowo he signed a truce with Frederick William, Elector of Brandenburg, then as royal commissioner in 1657, he led a ceasefire and conclude the Treaty of Bromberg. In 1658 he fought against the Swedes in the areas of Livonia and Samogitia. In 1658 he participated in the delegation sent by the King to negotiate with Russia. Beaten at the Battle of Werki he was captured and imprisoned during nearly four years. He was released from captivity in Moscow in 1662. As compensation for the harm that he had suffered, he received the former Radziwiłł's estate in Kiejdany. Obedience to the King and death He was a supporter of a strong and centralized royal power (limiting Liberum Veto), and supported the concept of a successor of the throne with the current King being still alive (Vivente Rege – a kind of Royal election). At the command of the King wanted to solve the issue of the Fraternal Association, an insurrection created by some long unpaid members of the army claiming the termination of obedience to the King (at the beginning for economic reasons, but later, considering any limitation to Liberum Veto and Vivente Rege proposal as "treason" to Commonwealth constitutional laws). In July 1662, he went to Vilnius for talks with the rebel troops in Lithuania. There he was treacherously captured by Konstanty Kotowski, Deputy Speaker of the Fraternal Association, which is thus intended to prevent any agreement that may in effect