name some people who fought the war from the first group mentioned above.
John Calvin, Huldrych Zwingli and John Knox
Protestantism
Reformed (or Calvinist) denominations spread in Germany, Hungary, the Netherlands, Scotland, Switzerland and France by Protestant Reformers such as John Calvin, Huldrych Zwingli and John Knox. 
which years did the cologne war take place? 1583 which country did it take place? Germany the war was fought between whom? Protestant and Catholic factions
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Protestantism [SEP] Introduction
In the 16th century, Lutheranism spread from Germany into Denmark, Norway, Sweden, Finland, Latvia, Estonia and Iceland. Reformed (or Calvinist) denominations spread in Germany, Hungary, the Netherlands, Scotland, Switzerland and France by Protestant Reformers such as John Calvin, Huldrych Zwingli and John Knox. The political separation of the Church of England from the pope under King Henry VIII began Anglicanism, bringing England and Wales into this broad Reformation movement. Protestants have developed their own culture, with major contributions in education, the humanities and sciences, the political and social order, the economy and the arts and many other fields. Protestantism is diverse, being more divided theologically and ecclesiastically than the Catholic Church, the Eastern Orthodox Church or Oriental Orthodoxy.