エルンスト・レーム
After World War I, military schools were banned by the Treaty of Versailles and the castle was used in the 1920s as a state educational institution ("Staatliche Bildungsanstalt"). In 1933 Plön Castle and the area around it was used as a National Political Institute, an elite school under the Nazi regime. Until the assassination of Ernst Röhm in 1934 it bore his name.