From what I recall, these photos, which may be stills from a film, were made for demonstration on handling of freshly caught P.O.W.s; likely they didn't have any Waffen SS 'flage on hand to clothe the "German", so they used the U.S. Jungle Suit.
I did some business with a Frenchman years ago who became a U.S. citizen. He told me a story about his grandmother in France, which she related to him when he was visiting his family over there. She had gotten ahold of a quantity of unused surplus One-Piece Jungle Suits (the camo Coveralls we are discussing) which she endeavored to soak in a vat of dark blue dye for conversion into standard work suits. She said it was frustrating, because the dark brown spots kept showing through, no matter how many times she tried to dye them...when he told me this story, we both laughed and agonized over the various fates of War surplus items in the late '40s-'50s!
That said, this is more proof that some of the One-Piece Jungle Suits did find their way into the ETO.