in the protestant reformation, a number of people criticizes the roman catholic church. people such as martin luther, jean calvin, huldrych zwingli or jan hus were reformers: in the end, each of them had followers which started their own church. today, most of these churches are known as protestant. in the european wars of religion, countries, but also local leaders fought for influence. most of the time one side of the warring fraction was catholics, the other was protestants.