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BATTLE // June 24, 1809

Battle of Graz

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Overview

The Battle of Graz took place on 24–26 June 1809 between an Austrian corps commanded by Ignaz Gyulai and a French division led by Jean-Baptiste Broussier. The French were soon reinforced by a corps under Auguste Marmont. The battle is considered a French victory though Gyulai was successful in getting supplies to the Austrian garrison of Graz before the two French forces drove him away from the city. Graz, Austria is located 145 kilometres (90 mi) south-southwest of Vienna at the intersection of the modern A2 and A9 highways.

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

Significance

The Battle of Graz, fought over three days in late June 1809, pitted an Austrian corps under Ignaz Gyulai against a French division under Jean-Baptiste Broussier, later reinforced by Auguste de Marmont's corps. Despite a substantial numerical advantage — roughly 15,000 Austrians against 5,000 French at the outset — Gyulai's force suffered around 2,000 casualties and was ultimately driven away from the city. The engagement is recorded as a French victory, though Gyulai achieved a limited operational objective: delivering supplies to the Austrian garrison holding Graz before being expelled. Graz, situated some 145 kilometres south-southwest of Vienna, held strategic value as a regional center, and the French effort to deny it to Austrian forces reflected broader pressure on Habsburg positions in the interior during the 1809 campaign. The reinforcement of Broussier by Marmont proved the decisive factor in shifting the balance against the larger Austrian force.

Forces & casualties

Troop strength

  • Austrian Empire15,000
    medium
  • First French Empire5,000
    medium

Austrian Empire fielded a 3.0 : 1 numerical advantage

Casualties

  • Austrian Empire2,000
    medium13% loss rate

Commanders (3)

Austrian Empire

First French Empire

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Last verified June 2026
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