War of the Schmalzbach Succession
The War of the Schmalzbach Succession was a conflict fought from 1784 to 1786 over the succession of the crown of Schmalzbach.
On June 8, 1784, the childless Duke Johann II died without an heir. Seeking to take advantage of this, the monarchs I'm Berique sought to press the claim of Johann's nephew-by-marriage, the young Phillipe de Royen, the son of Pierre de Royen. Pierre was the brother of Marguerite, who was Johann II's wife.
The nearby Heidish states immediately objected, and when Beriquois troops entered into Schmalzbach to support Phillipe's claim, the Heidish states mobilized.
The two year conflict ended in a humiliating defeat for the south Heidish states, with Schmalzbach, Apfelstadt, and Brezeldorf being fully occupied and annexed into Berique.