The Russian army of Kutuzov was retiring north of the Danube before the French army of Napoleon. On 13 November 1805 Marshals Murat and Lannes, commanding the French advance guard, had captured a bridge over the Danube at Vienna by falsely claiming that an armistice had been signed, and then rushing the bridge while the guards were distracted. Kutuzov needed to gain time in order to make contact near Brno (Brünn) with reinforcements led by Buxhowden. He ordered his rearguard under Major-General Prince Pyotr Bagration to delay the French.
