Jutland peninsula is made up of the German Bundesland of Schleswig-Holstein. Schleswig-Holstein has two parts: the former duchies of Schleswig (Danish fief) and Holstein (German fief), both of which have passed back and forth between Danish and German rulers several times. The last adjustment of the Danish–German border followed the Schleswig Plebiscites in 1920 and resulted in Denmark's regaining Northern Schleswig ( or more commonly today: "Sønderjylland"). The historical southern border of Jutland are areas south of Kiel, Husum and Rendsburg, but the river Eider was the border between the former duchies of Schleswig and Holstein, as well as the historical
Jutland horse the Jutland being used by Viking raiders in what is now Great Britain. The first written record is from the 12th century, when they were popular as war horses. Some infusion of bloodlines from other breeds occurred in the 18th century, but the modern Jutland type only began about 1850 with the addition of blood from several other breeds, mainly draft horses. A stud book was created in the late 19th century, and the Jutland population grew to a maximum around 15,000 by 1950. Numbers subsequently declined, and as of 2011, only an estimated 1,000 horses remained. The Jutland is