In 1914, on the eve of the First World War, Carnegie founded the Church Peace Union (CPU), a group of leaders in religion, academia, and politics. Through the CPU, Carnegie hoped to mobilize the world's churches, religious organizations, and other spiritual and moral resources to join in promoting moral leadership to put an end to war forever. For its inaugural international event, the CPU sponsored a conference to be held on August 1, 1914, on the shores of Lake Constance in southern Germany. As the delegates made their way to the conference by train, Germany was invading Belgium.