"Generalfeldmarschall (English: general field marshal, field marshal general, or field marshal; listen (help·info); abbreviated to Feldmarschall) was a rank in the armies of several German states and the Holy Roman Empire (Reichsgeneralfeldmarschall); in the Habsburg Monarchy, the Austrian Empire and Austria-Hungary, the rank Feldmarschall was used. The rank was the equivalent to Großadmiral (English: Grand admiral) in the Kaiserliche Marine and Kriegsmarine, a five-star rank, comparable to OF-10 in today´s NATO naval forces." - (en.wikipedia.org 12.11.2019)
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