isation ▁and ▁political ▁pressure , ▁political ▁concept ▁behind ▁the ▁Deutsche ▁Reichs bahn ▁ ▁Julius ▁Dor pm üller , ▁general ▁manager ▁of ▁the ▁Deutsche ▁Reichs bahn ▁ 1 9 2 6 – 1 9 4 5 ▁and ▁Reich ▁Transport ▁Minister ▁from ▁ 1 9 3 7 ▁to ▁ 1 9 4 5 , ▁planning ▁of ▁railway ▁construction . ▁ ▁Paul ▁Camil le ▁von ▁Den is , ▁Bav arian ▁Ludwig s bahn ▁from ▁N ure m berg - F ür th ▁ ▁Karl ▁Et zel , ▁architect ▁and ▁railway ▁pione er ▁( built , ▁inter ▁al ia , ▁the ▁B ren ner bahn , ▁the ▁Ge is ling er ▁Ste ige ▁and ▁the ▁B iet ig heim ▁railway ▁vi ad uct ▁ ▁Robert ▁Ger wig , ▁Schwar zw al db ahn , ▁Got th ard bahn ▁ ▁David ▁Hans emann ▁bank er , ▁politician , ▁vice ▁president ▁of ▁the ▁R hen isch ▁railway ▁company ▁ ▁Friedrich ▁H ark ort , ▁Prin z - Wil helm ▁railway ▁ ▁August ▁von ▁der ▁He yd t , ▁head ▁of ▁the ▁Pr uss ian ▁state ▁rail ways ▁from ▁ 1 8 4 8 ▁to ▁ 1 8 6 9 ▁ ▁Michael ▁Kn oll , ▁Ge is ling er ▁Ste ige ▁ ▁Cla us ▁Ko ep cke , ▁engineer ▁and ▁responsible ▁for ▁the ▁development ▁of ▁the ▁Sax on ▁narrow ▁gauge ▁rail ways ▁as ▁the ▁Ge heimer ▁Fin anz rat ▁from ▁ 1 8 7 2 ▁ ▁Gustav ▁Kr ö hn ke , ▁engineer , ▁pushed ▁for ▁the ▁construction ▁of ▁the