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BATTLE // January 25, 1807

Battle of Mohrungen

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Overview

In the Battle of Mohrungen on 25 January 1807, most of a First French Empire corps under the leadership of Marshal Jean-Baptiste Bernadotte fought a strong Russian Empire advance guard led by Major General Yevgeni Ivanovich Markov. The French pushed back the main Russian force, but a cavalry raid on the French supply train caused Bernadotte to call off his attacks. After driving off the cavalry, Bernadotte withdrew and the town was occupied by the army of General Levin August, Count von Bennigsen. The fighting took place in and around Morąg in northern Poland, which in 1807 was the East Prussian town of Mohrungen. The action was part of the War of the Fourth Coalition in the Napoleonic Wars.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The Battle of Mohrungen was a tactical engagement during the winter phase of the War of the Fourth Coalition in which Bernadotte's corps confronted a Russian advance guard under Markov near Morąg in East Prussia. Although the French initially pushed back the Russian force, a cavalry raid on the French supply train disrupted Bernadotte's offensive momentum and compelled him to break off the action. Once the raid was repelled, Bernadotte withdrew rather than renew the assault, allowing Bennigsen's army to occupy the town. The outcome left the Russians in possession of Mohrungen, reflecting the difficulties French forces faced in sustaining operational pressure against the Russian army during the demanding winter campaign in northern Poland. The engagement illustrated how flank and rear threats to logistics could neutralize tactical success on the main line, a persistent challenge in this theater.

Tactics

Bernadotte's corps engaged Markov's advance guard and drove it back toward the main Russian force. Before the French could exploit this success, a Russian raid struck the French supply train in the rear. Bernadotte halted his attacks to deal with the threat, and after repelling the cavalry he chose to withdraw rather than continue the engagement, leaving Bennigsen's army to occupy Mohrungen.

Forces & casualties

Troop strength

  • French Empire9,000
    medium
  • Russian Empire12,000
    medium

Russian Empire fielded a 1.3 : 1 numerical advantage

Casualties

  • French Empire1,096
    medium12% loss rate
  • Russian Empire1,400
    medium12% loss rate

Commanders (5)

French Empire

Russian Empire

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Last verified June 2026
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