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Battle of Austerlitz

The Battle of Austerlitz, fought on 2 December 1805, was a decisive Napoleonic Wars engagement also known as the Battle of the Three Emperors.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

The Battle of Austerlitz, fought on 2 December 1805, was a decisive engagement of the Napoleonic Wars, also known as the Battle of the Three Emperors. Napoleon I’s French forces defeated a larger Austro-Russian army near Austerlitz in the Austrian Empire, in present-day Slavkov u Brna, Czech Republic. The battle is widely regarded as one of Napoleon’s greatest military victories.

Background

The battle was the first major engagement of the War of the Third Coalition, fought during the Napoleonic Wars. The coalition sought to challenge French dominance in Europe after a series of French successes. Napoleon concentrated his forces against the Austro-Russian army near Austerlitz.

Battle

Napoleon achieved a decisive battlefield victory on 2 December 1805. Contemporary and later accounts describe the fighting as a major example of Napoleon’s tactical skill. Common casualty estimates place French losses at about 9,000 and allied losses at about 15,000 killed or wounded, plus about 11,000 captured.

Aftermath

The defeat compelled Austria to make peace with France in the Treaty of Pressburg. The result strengthened French influence in continental Europe and delayed broader anti-French coordination. The battle helped force Austria to conclude the treaty, reshaping the balance of power in Europe.

Historical significance

Austerlitz is often described as one of the most important battles of the Napoleonic era and one of Napoleon’s finest victories. It became a model case in military history for operational deception and concentrated attack. The battle temporarily weakened the anti-French coalition in Europe.

Key facts

  • The battle is widely regarded as one of Napoleon’s greatest military victories.
  • French forces defeated a larger Austro-Russian army.
  • The battle helped force Austria to conclude the Treaty of Pressburg.
  • It temporarily weakened the anti-French coalition in Europe.
  • Common casualty estimates place French losses at about 9,000 and allied losses at about 15,000 killed or wounded, plus about 11,000 captured.
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Canadian context

The battle is mainly relevant to Canadian readers as a major European event in the Napoleonic Wars, a period that influenced later British and European imperial politics that also affected British North America.

Frequently asked questions

When was the Battle of Austerlitz fought?
It was fought on 2 December 1805.
Why is it also called the Battle of the Three Emperors?
Because Napoleon I, Alexander I, and Francis II were associated with the battle and present as the opposing rulers.
Who won the Battle of Austerlitz?
Napoleon’s French army won a decisive victory over the Austro-Russian forces.
Where did the battle take place?
Near Austerlitz in Moravia, then part of the Austrian Empire; the site is now Slavkov u Brna in the Czech Republic.
What was the main political result?
Austria was forced to sign the Treaty of Pressburg, which reshaped the balance of power in Europe.
How large were the armies?
Common estimates give about 68,000 French troops against about 90,000 Russians and Austrians.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Battle_of_Austerlitz
    Supports: Date, location, alternate name, troop estimate, and casualties.
  2. Encyclopaedia Britannicahttps://www.britannica.com/event/Battle-of-Austerlitz
    Supports: Battle date, commanders, troop numbers, result, and Treaty of Pressburg aftermath.
  3. Encyclopaedia Britannicahttps://www.britannica.com/summary/Battle-of-Austerlitz
    Supports: Concise summary of the battle, location, coalition context, and significance.
  4. World History Encyclopediahttps://www.worldhistory.org/article/2253/battle-of-austerlitz/
    Supports: Importance, tactical significance, and Napoleon's victory.
  5. EBSCO Research Startershttps://www.ebsco.com/research-starters/history/battle-austerlitz
    Supports: War of the Third Coalition context and battle overview.