The siege of Magdeburg (French: Siège de Magdebourg) (25 October - 8 November 1806) was a siege of the city that took place during the war of the Fourth Coalition. A French force, initially under the command of Marshal Grand Duke of Berg Joachim Murat, then a French army Corps under the command of Marshal Michel Ney laid siege and eventually obtained the surrender of Franz Kasimir von Kleist's Prussian force that had taken refuge in Magdeburg, Prussia's second city.