By 1866, the Waldeck contingent was styled "Fürstlisches Waldecksches Füselier-Bataillon", and in the Austro-Prussian War of that year Waldeck (already in a military convention with Prussia from 1862) allied with the Prussians; however the Battalion saw no action. Joining the North German Confederation after 1867, under Prussian leadership, the Waldeck Fusilier Battalion became the III (Fusilier) Battalion of the Prussian Infantry Regiment von Wittich (3rd Electoral Hessian) No. 83, and as such it remained until 1918. The position of regimental 'Chef' (an honorary title) was held by the Prince of Waldeck and Pyrmont.