伯爵戦争
The Count's Feud (), also called the Count's War, was a war of succession that raged in Denmark in 1534–36 and brought about the Reformation in Denmark. In the international context, it was part of the European wars of religion. The Count's Feud takes its name from the Protestant Count Christopher of Oldenburg, who supported the Catholic King Christian II, deposed in 1523, over the election of Christian III, a staunch Protestant who had already implemented Lutheranism as the state religion in Schleswig and Holstein in 1528.