The Battle of Morgarten occurred on 15 November 1315, when a 1,500-strong force from the Swiss Confederacy ambushed a group of Austrian soldiers of the Holy Roman Empire on the shores of Lake Ägeri near the Morgarten Pass in Switzerland. The Swiss, led by Werner Stauffacher, defeated the Austrians, who were under the command of Duke Leopold I. The Swiss victory consolidated the Everlasting League of the Three Forest Cantons, which formed the core of modern Switzerland.