1414 The council of Constance is convened. Switzerland is visited by great numbers of ecclesiastics and great nobles.
1415 Duke Frederick of Austria helps John XXIII escape from Constance. The emperor Sigismund places Frederick under the ban. By Sigismund’s order the confederates conquer the Austrian Aargau. Bern receives the lion’s share. The first common bailiwicks (Freie Amter) are established. Uprising of the Valais against the baron von Raron, a despotic ruler.
1416 Lucerne, Uri, and Unterwalden form an alliance with Upper Valais.
1417 Uri and Upper Valais take the Val d’Ossola from Savoy.
1422 The attempts of Uri and the confederates to acquire territory to the south of the Alps receive a check in their defeat by the Milanese at Arbedo.
1424 The Grey League is formally renewed.
1436 The league of the Ten Jurisdictions is formed in the eastern Grisons. Conflicting claims over the territories left by Frederick, count of Toggenburg, cause dissension between Zurich and Schwyz. The other confederates take sides with Schwyz.
1440 The men of Zurich invade Schwyz but are compelled to retreat. Felix Hämmerlin, humanist, furthers the new learning at Zurich.
1442 Zurich allies itself with Austria and resists federal jurisdiction. Civil war (the Old Zurich War) breaks out.
1443 The Zurich troops are defeated at Sankt Jacob on the Sihl. Stüssi, the burgomaster of Zurich is slain.