It was to the men of Zurich and their leader Hans Waldmann that the victory of Morat (1476) was due in the Burgundian war; and Zurich took a leading part in the Italian campaign of 1512-15, the burgomaster Schmid naming the new duke of Milan (1512).
It was the prominent part taken by Zurich in adopting and propagating (against the strenuous opposition of the Constafel) the principles of the Reformation (the Frau Munster being suppressed in 1524) which finally secured for it the lead in the Confederation (see Switzerland and Zwingli).
In the first battle (4th June) the French under Massena, on the defensive, were attacked by the Austrians under the Archduke Charles, Massena retiring behind the Limmat before the engagement had reached a decisive stage.
In 1403, with the help of Obwalden, it won the Val Leventina from the duke of Milan, but it was lost in 1422, though in 1440 Uri alone reconquered it and kept it (winning the bloody fight of Giornico in 1478) till 1798.
In 1419, with Obwalden, Uri bought Bellinzona, but lost it at the battle of Arbedo (1422), though, with Schwyz and Nidwalden, it won it back in 150o, keeping it also till 1798.
In 1512 Uri shared in the conquest of Lugano, andc., by the Confederates, her natural position forcing her to extend her rule towards the south, though many attempts on and temporary occupations of the Val d'Ossola (1410-1515) ultimately failed.