Waffen SS was not part of regular army (Wehrmacht), like you are trying to whitewash. From wiki: "the Waffen-SS, the military wing of the German Nazi party".

It was separate army, directly under Nazi party. Many members were German. They have different weapons, their own logistics, separate chain of command and so on.

> They were also intrinsically less involved in the Final Solution, unlike the regular Waffen-SS, by and large (in particular they were not involved operating the camps,

There were atrocities outside of West Europe as well.