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BATTLE // February 7, 1807

Battle of Eylau

Cartographic map of the Battle of Eylau
Djmaschek, via Wikimedia Commons · CC BY-SA 3.0

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Overview

The Battle of Eylau was a bloody and strategically inconclusive battle on 7 and 8 February [O.S. 26 and 27 Jan.] 1807 between Napoleon's Grande Armée and the Imperial Russian Army under the command of General Levin August von Bennigsen near the town of Preussisch Eylau in East Prussia. Late in the battle, the Russians received timely reinforcements from a Prussian division of von L'Estocq. After 1945, the town was renamed Bagrationovsk as part of Kaliningrad Oblast, Russia. The engagement was fought during the War of the Fourth Coalition, part of the Napoleonic Wars.

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

Significance

The Battle of Eylau, fought on 7–8 February 1807 near Preussisch Eylau in East Prussia, was one of the bloodiest engagements of the War of the Fourth Coalition and notably failed to produce the decisive result Napoleon's campaigns typically sought. With both sides fielding roughly comparable forces — around 75,000 French against 76,000–83,000 Russians — the battle ended in strategic inconclusiveness despite casualties that ranged into the tens of thousands on each side. The timely arrival of a Prussian division under von L'Estocq reinforced Bennigsen's Russian army late in the fighting, denying Napoleon the clear-cut victory he needed to knock the Fourth Coalition into submission. The outcome left the campaign in the east unresolved and prolonged the conflict into the summer of 1807, ultimately leading to further operations before a settlement could be reached.

Forces & casualties

Troop strength

  • French Empire75,000
    medium
  • Russian Empire76,000–83,000
    medium

Both sides were near-evenly matched in numbers

Casualties

  • French Empire15,000–29,643
    medium30% loss rate
  • Russian Empire15,000–26,000
    medium26% loss rate

Commanders (12)

French Empire

Russian Empire

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6 sibling battles · 2 factions

Last verified May 2026
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