Toruń (Thorn) was one of the most important cities in Poland during the Napoleonic period. This was the place of crossing of military routes because of the bridge over the Vistula river. Napoleon established a great army depot and military hospitals in the town. Toruń was also his force concentration point. The fights during the campaigns of 1806/1807, 1809 and 1813 were very heavy for Toruń. After the Treaty of Tilsit of 1807, Toruń was incorporated into the Duchy of Warsaw, but the city was governed by the French military administration to 1808. The Polish military governor of the city – General Stanisław Skarbek Woyczyński – was in charge from 1808 to 1812. During the campaign of 1806/1807 the 11th Infantry Regiment commanded by Colonel Maciej Szyrer was recruited in Toruń (this Regiment was soon disbanded during the siege of Gdańsk), same as the 6th Uhlan Regiment (one of the best cavalry regiments in the Duchy of Warsaw), commanded by Colonel Dominik Dziewanowski. In the 1806-1808 period, many French regiments and one battalion of the Bevilaqua Saxon Infantry Regiment were deployed in Toruń. In 1808 these units were replaced by the 12th Infantry Regiment of the Duchy of Warsaw, commanded by Colonel Jozef Weyssenhoff. In 1809 the third battalion of this Regiment with recruits from the 10th and 11th Regiments defended the city against the Austrian corps commanded by General Mohr. In the period of 1809-1812 Toruń’s garrison consisted of various Polish units: the 5th, 10th, 11th, 14th and 17th Infantry Regiments, the 6th Uhlan Regiment, and also artillery and engineering units. They all participated in the French invasion of Russia in 1812. In 1813 Toruń was defended by the Bavarian Brigade, 250 French infantrymen and a half of the company of the Polish artillery.