By the time of Napoleon's conquest of Germany, the Waldeck Regiments in Dutch service had been dissolved when, as the Batavian Republic, Holland was made into a kingdom ruled by Napoleon's brother Louis. Reduced to battalion strength, they now formed the 3rd battalions of the 1st and 2nd Infantry Regiments of the Kingdom of Holland. The 5th Battalion was disbanded, and Waldeck was now also obliged to provide two companies to the II Battalion, 6th German Confederation (i.e., Confederation of the Rhine) Regiment (along with two companies from Reuß) in the service of the French Empire. As with all French infantry, they were referred to as 'Fusiliers'. They served mainly in the Peninsula War against the Duke of Wellington. In 1812, the 6th Confederation Regiment was re-formed, with three companies from Waldeck and one from Reuß again forming the II Battalion. By the time of the downfall of the French Empire in 1814 the battalions in Dutch service had disappeared, but Waldeck now supplied three Infantry and one Jäger Companies to the newly formed German Confederation.