The Appeal War (properly: Apelle War) was a conflict between Prince George Albert of East Frisia and the Estates of East Frisia about the authority to raise taxes, so properly speaking, it should be classified as a civil war. It was named after Heinrich Bernhard von dem Appelle. Heinrich Bernard was one of the leaders of the rebellious faction, who were called the renitents. He owned the Groß-Midlum manor in Krummhörn and was the administrator of the chamber of knights in the Estates of East Frisia.