|"Ulrich Zwingli, the Swiss Reformer's Death and Fame"|
|The Lutheran Journal, Vol. 71, #1, 2002 - Erwin Weber|
When Zwingli returned home to Zurich following the debate with Martin Luther in Marburg in 1529, the Catholic cantons declared war against the Protestants in Zurich. The armies met on the battlefield in Kappel with Zwingli, a chaplain, at the front. He was killed fighting for the Protestant cause in October 1531.
Zwingli's work was continued by his close friend and collaborator, Heinrich Bullinger, who sought the cooperation of John Calvin in the French speaking territory of Switzerland. From Switzerland the reform movement spread throughout Europe and eventually came to the United States.