The rank of Obergrenadier or Oberschütze was one which had no real equivalent in neither the Luftwaffe or the Kriegsmarine. The Waffen-SS, however, had an equivalent, the SS-Oberschütze. The current day US Army equivalent is Private 1st Class.

An Obergrenadier was not a whole lot above his Grenadier platoonmates, at the most commanding a small squad of 5 or 10. It was usual for weapons in limited supply, like Panzerfausts, to be carried by an Obergrenadier.

For a more complete overview of which ranks existed, see Wehrmacht ranks.

The page that helped me with this writeup is no longer on the internet, but it used to live at