Kaiserreich

Kaiserreich is the German term for a monarchical empire. Literally a Kaiser's Reich, an emperor's domain or realm. When the proper term is used without disambiguation, it is assumed in Germany to refer to the German Empire of 1871–1918, during which the large majority of historically independent German states (with the significant exception of Austria) were unified under a single Kaiser.

While the general use of the term could apply to many non-German states, as a descriptor of a German state under the authority of an Emperor, it additionally applies to:

• the Holy Roman Empire of 962–1806
• the Austrian Empire of 1804–1867
• the Austro-Hungarian Empire of 1867–1918

Kaiserreich is also the title of a popular & well known mod for Darkest Hour: A Hearts of Iron Game set in an alternate history where Germany won The First World War