Reichskommissariat – Wikipedia

Reichskommissariat (English: Reich Commissariat) is the German designation for a type of administrative entity headed by a government official known as a Reichskommissar (English: Reich Commissioner).Although many different such offices existed primarily throughout the Imperial German and Nazi periods in a number of different fields (ranging from public infrastructure and spatial planning to …

https://en.wikipedia.org/wiki/Reichskommissariat