This song is about The Battle of Prague between 25 July and 1 November 1648 and was the last action of the Thirty Years' War. General Hans Christoff von Königsmarck, commanding Sweden's flying column, entered the city, defended by the Governor Feldmarshall Rodolfo (Rudolph) Colloredo Mels und Wallsee, a former Wallenstein's general, and a veteran of the siege of Mantua and of the battle of Lutzen and captured Prague Castle on the western bank of the Vltava river. The Swedes attempted to enter the Old Town on the eastern bank of the river, but were repulsed on the Charles Bridge by Colloredo' men. When a third Swedish army commanded by Prince Carl Gustaf came close to Prague, all three Swedish armies launched a number of attacks against the city which thanks to the energy of Feldmarshall Colloredo and their citizen soldiers, including Jews and students of the Academic Legion, and strong fortifications resisted. When in November Gustaf received a report about the signed Peace, he ordered his troops to leave. Unable to enter the city, the Swedes settled for looting the Castle. Many of the treasures collected by Emperor Rudolf II (such as the Codex Gigas and Codex Argenteus) were taken to Sweden, whereof some can be found in Drottningholm Palace.