Mari has different rank than everyone else, though I imagine that also has something to do with the lack of other decoration on her uniform. She lacks that circular pin with the inscribed red circle and black dot that everyone else has.
Does this artist do literally anything other than draw characters as nazis?
Why not? commie artists draw their characters with commie shit all the time and you don't hear people complain about it. It's always losers whining about characters wearing hugo boss uniforms.