A hard fought victory for Napoleon over Prince Hohenlohe's Prussians which could have gone either way when Ney launched his attack too early and Lannes was beaten back trying to join him. Further French divisions arrived later in the day and numbers began to tell. The Prussians had held their line throughout the day but had failed to take advantage of their success, and when French reinforcements forced their way through the Prussian centre, the Prince ordered a retreat. Murat's French cavalry caused the retreat to descend into a rout and only darkness saved many of the Prussian soldiers.
Along with the concurrent battle at Auerstädt the Prussian army was effectively beaten.

Eastern Germany (Germany)

The French Grande Armee

Number engaged :

96,000

Casualties :

5,000 (5.21%)

The Prussian Army

Number engaged :

53,000

Casualties :

25,000 (47.17%)