Abwehr wrote:It was all pretty arbitrary anyways.
The Holy Roman Empire was hardly a "Reich".
In German, Reich: “Empire”, Kaiser: “Emperor”
The First Reich, in Latin (Sacrum Romanum Imperiumthei), varying complex of lands in western and central Europe ruled over first by Frankish and then by German kings for 10 centuries, from Charlemagne's coronation in 800 until the renunciation of the imperial title in 1806.
The Second Reich led by the Prussian Hohenzollerns. From unification of Germany in 1871, to 1918 The King of Prussia became the Kaiser.
Third Reich official Nazi designation for the regime in Germany from January 1933 to May 1945, as the presumed successor of the medieval and early modern Holy Roman Empire of 800 to 1806 (the First Reich) and the German Empire from 1871 to 1918 (the Second Reich).