Despite 4,230 words the article never really addresses the title and instead wanders off on verbose tangents. So I had to go and search for the answer myself.

Despite 4,230 words the article never really addresses the title and instead wanders off on verbose tangents. So I had to go and search for the answer myself. No, it was not mandatory to perform the salute if you were not a German citizen. Yes, it was often easier to do so; the Portuguese Consul General was beaten by SA thugs when he failed to do so, but couldn't be charged with any offence.