The Italian Carabinieri could have been sourced for pieces too in an interesting way. To my knowledge, correct me if I am wrong, but Carabinieri uniforms under Mussolini's fascist dictatorship did not have the capes and fancy aesthetics they do today, and rebelled against Mussolini.

If she really wanted German uniforms too (weird) she could have found so many interesting pieces that could be mashed or combined into an outfit too, and then given the bizarre sexualizations added onto her design. She intentionally chose to produce a sexualized nazi uniform and stands by it.