Rank insignia of the Nazi-Wehrmacht, Heer (Army), here shoulder board, used during World War, until 1945:
Fahnenjunker-Oberfeldwebel, short: Fhj-OFw, Fj-OF (as to Oberfeldwebel, additional two 9mm silver-grey diamond-woven rayon NCO braids close to the end of the shoulder board)
corps colour: white infantry/ motorised infantry
today comparable: to NATO OR-7.
Own work