further Swedish advances, even forcing the Swedes onto the defensive. In the meantime, the Sejm (Commonwealth Parliament) agreed to raise funds for the war, but the situation of the Polish forces was difficult. Lithuanian forces were dealt a serious defeat in December 1626 near Kokenhusen in Livonia and retreated behind the Dvina river. 1627 Hetman Koniecpolski recaptured the town of Puck on 2 April 1627. The Swedes planned to strike at Koniecpolski from two directions — Oxenstierna from direction of the Vistula and Johann Streiff von Lauenstein and Maximilian Teuffel from Swedish-held Pomerania. The flooding of the Vistula disrupted their plans and allowed Koniecpolski to intercept the enemy units coming from neighboring Pomerania. In mid-April, Koniecpolski (with 2,150 hussars, 3,290 cossack cavalry, 2,515 western infantry, 1,620 Polish infantry, 1,265 dragoons and 2,000 Ukrainian Cossacks) surrounded a Swedish force inside the town of Czarne (Hammerstein).Three days later the Swedes surrendered, leaving behind their banners and standards. Many of the Swedish troops, who were predominantly newly raised German mercenaries, changed sides to the Commonwealth. This victory also convinced George William, Elector of Brandenburg to declare his support for King Sigismund III. At the beginning of June 1627, King Gustavus Adolphus was lightly wounded while attempting a night-crossing of the River Vistula in a boat near (Kieżmark), south of Danzig (Gdańsk), and had to retreat. In July he led a force to lift the siege of Braniewo, and lay siege to Orneta (Wormditt). Hetman Koniecpolski responded with the sudden attack and capture of Gniew. Gustavus Adolphus was reported to have been impressed by the speed of Koniecpolski's reaction. Later at the Battle of Dirschau (modern Tczew), Koniecpolski with about 7,800 men (including 2,500 cavalry and hussars), tried to stop the Swedish army (10,000 men including 5,000 infantry) from reaching Danzig. A major battle was fought between 17 and 18 August 1627 (in the new style calendar), with the Swedish forces positioned near the marshes of the River Motława. The Swedes hoped to provoke the Poles into a reckless attack and then to destroy them with infantry fire and artillery, but Koniecpolski decided otherwise. The Swedes then took the initiative and attacked with cavalry, and managed to deal severe damage to the Polish cavalry, but failed to inflict a crippling blow on the main body of the army (the morale of which remained high, mostly thanks to Koniecpolski). When, King Gustavus Adolphus was shot