The Landsgemeinde of Obwalden stood firmly against the Protestant Reformation. When attempts to resolve the conflicts between the Protestant and Catholic cantons in the Tagsatzung and during the disputation of Baden (1526) were unsuccessful, Obwalden adopted an aggressively pro-Catholic stance. In 1528, they sent troops over the Brünig Pass to try to force the Bernese Oberhasli region to hold the old faith. The Obwalden invasion and the Bernese response, which drove them out of Bern, were part of the general unrest leading to the First War of Kappel in 1529. While the First War of Kappel ended in a peace treaty without loss of life, two years later the Second War of Kappel ended in the death of reformer Huldrych Zwingli and a victory for the Catholic side. However, since about half of the Confederation remained Protestant, the Catholic cantons began to make alliances with neighboring Catholic leaders including France and Spain. Most of the leading political families in Obwalden became pro-French.