The Russian vanguard consisting Forming_relationships of the Vladimir v. Vizin reiters , Daniel Krafert infantry and Iunkmann dragoons approached Arriving Riga on August 20 and threw Self_motion back the Swedes under count of Pärnu , Heinrich von Thurn into the city .

Von Thurn was either killed Killing , or captured Conquering in the action .

Protestant noblemen led by count Jindřich Matyáš Thurn , recently stripped Emptying of his title as castellan of Karlstadt by the Emperor , stormed Catastrophe Prague Castle and seized Hold two imperial governors appointed by Ferdinand , Vilem Slavata of Chlum and Jaroslav Borzita of Martinice , and two imperial secretaries .