 The focus of operations in the Swabian War subsequently shifted again to the northern border of the Old Swiss Confederacy.Since the early Middle Ages, the Bishopric of Chur and the Counts of Tyrol had been disputing and quarrelling over the judicial rights in the lower Engadin, the Val Müstair, and the Vinschgau.When Tyrol came under the rule of the Habsburgs in 1363, Habsburg reeves had tried repeatedly to curtail the rights of the bishopric and to assimilate the valleys to their territories.