Yeah, the AK didn't come out until well after WW2. Collar insignia is wrong, and the ribbon is one buttonhole too high. Plus he's wearing SS collar rank on a Heer tunic, and the eagle is on the wrong side.
You are welcome. I Faved it because it looked l done. I like the weird sideways "ZZ" instead of the "SS" Runes. But, you do have a German Eagle on the chest above the right pocket. Army, Navy, and Air Force troops had it that way. The SS had their German Eagles on the left arm and not on the chest. Except for the Indian Volunteers in the Waffen SS. They were issued Army uniforms instead of SS uniforms before the Nazis air dropped them back in India. The Bender publication titled Ch Insignia of the SS shows an Indian soldier in his Nazi uniform. Maybe your Untoten got issued an Army Jacket that was altered to heve the zombie insignia?