Somebody had to round up all the Jews, Romani, and Slavs in the vast Nazi occupied territories for the SS to murder, and it was the Wehrmacht that did it. The Wehrmacht also supplied soldiers and equipment to assist in the mass executions and burials.
That was the point of the Wehrmacht Exhibition, to knock down the myth.
“Somebody had to round up all the Jews, Romani, and Slavs in the vast Nazi occupied territories for the SS to murder, and it was the Wehrmacht that did it.”
The war would have ended years earlier if Germany used combat troops in what was basically a police role. I have no horse in this race (not belonging to any of the groups involved), but the photo evidence doesn’t support your contention.