Rang insignia of the German Wehrmacht, here “Arabesque collar patch” (also: Larish embroidery, Old Prussian embroidery, or Arabesquen embroidery), depicting “Generalfeldmarschall”  of the Heer/Army (1942-45), corps colour:  deep red.
http://www.cimilitaria.com/Heer%20Officer,%20NCO%20%20EM%20Rank%20Insignia%20&amp;%20Waffenfarbe.htm