The Japanese version uses loanwords from English and German. The German dub uses correct, period-appropriate military terms ( Luftwaffe , Reichswehr , Stabsfeldwebel ), which adds significant historical flavor that gets lost in translation.
Furthermore, the world itself—the "Empire"—is coded as a Germanic superpower. Character names like von Degurechaff, von Lergen, and Rudersdorf sound natural in German. Watching the Saga of Tanya the Evil German dub transforms the viewing experience from a "foreign anime about Germany" into a "native military drama." saga of tanya the evil german dub free