Siege of Graudenz

Overview

The siege of Graudenz or siege of Grudziądz was a siege during the Napoleonic Wars between 22 January and 11 December, 1807. As part of the War of the Fourth Coalition the Prussian fortress at Graudenz in West Prussia in the Prussian Partition of Poland was besieged by forces of the French Empire and its allies. The garrison, commanded by General Wilhelm René de l'Homme de Courbière, withheld blockade and siege for some 11 months, long past the formal Peace of Tilsit. The French abandoned the siege after the borders between Prussia and the new Duchy of Warsaw were defined; Graudenz/Grudziądz staying a Prussian possession until Poland regained independence after World War I.

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

Significance

The siege of Graudenz, lasting from January to December 1807, was one of the longest sieges of the War of the Fourth Coalition. A Prussian garrison of roughly 4,500–5,709 men under General Courbière held the fortress against a French besieging force of approximately 7,000 for eleven months, outlasting the war itself. The garrison did not capitulate even after the Peace of Tilsit formally ended hostilities between France and Prussia. The French ultimately abandoned the siege not through military reduction of the fortress but because the post-Tilsit border settlement between Prussia and the newly created Duchy of Warsaw left Graudenz within Prussian territory, rendering continued operations politically moot. The siege thus stands as an example of a garrison action that achieved its purpose through endurance rather than relief, and the fortress remained Prussian until Polish independence after the First World War.

Forces & casualties

Commanders (5)