God's Marshall Plan illuminates the dramatic ramifications of these efforts by showing how the mission to remake Germany in America's image actually remade American Protestantism itself. American Protestants realized they had come to dramatically different conclusions about how to rebuild the West out of the ruins of war. European Protestants, meanwhile, began to sharply protest America's spiritual advance. Forsaking their wartime nationalism, a growing number of ecumenical Protestants championed a new ethic of global fellowship, reconciliation, and justice. However, a fresh wave of evangelical Protestants emerged and ensured that the religious struggle would continue into the Cold War. Strasburg argues that the spiritual struggle for Europe ultimately forged two competing visions of global engagement -- Christian nationalism and Christian globalism -- that transformed the United States, diplomacy, and politics in the Cold War and beyond.