This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
The Second War of Kappel followed in October 1531, after Zurich imposed an economic blockade on the Catholic cantons intended to force religious change without open war, a policy Gordon identifies as the war's immediate provocation and one contemporaries in Zurich itself blamed Zwingli for. The Catholic cantons declared war and marched on Zurich, whose hastily raised citizen militia, Zwingli himself serving as an army chaplain, was routed at the Battle of Kappel on 11 October 1531: roughly five hundred of Zurich's poorly organized forces were killed in under an hour, including Zwingli and twenty four Zurich pastors who had accompanied the army, against comparatively few Catholic losses.
The victorious Catholic forces burned Zwingli's body as a heretic's. The Second Peace of Kappel, signed the following month, confirmed each canton's right to choose Reformed or Catholic worship, ended Zurich's expansionist Reformation policy toward the Mandated Territories, and entrenched Switzerland's confessional division between Reformed and Catholic cantons for centuries afterward, a division the Confederation's own institutions worked around rather than resolved.