The Abbott warned Duke Frederick II of Austria that Appenzell could become another Switzerland if no measure would be taken.
Frederick promised him assistance and sent an army with noble cavaliers, which started a five-year war between the Austria and the Appenzellers, the latter of whom supported by the Swiss Confederation.
[1] In 1411,the Appenzellers concluded a treaty of alliance and citizenship on November 25, 1411, with the Swiss Confederation, except Bern.
The confederates accepted all of the duke's claims within their territories related to mortgages, fiefs, and prescriptive rights.
The towns of Scafhausen, Walshut, Laufenbur, Seckingen, Rheinfelden, Diessenhofen, Baden, Rapperswil, Brugg, Bremgarten, Zofingen, Sursee, Lenzburg, Mellingen, Aarau, and Fraeuenfeld were obliged to ratify the agreement.