Shame on the other soldiers for not saluting, including the Americans. It is a professional courtesy to salute national anthems and they blew it. (Retired Army Officer)
When I was stationed in Germany, DIVARTY 1AD in Baumholder had a series of sporting events against the German Artillery School at Idar Oberstein. We never saluted during the playing of the German national anthem, and they didn’t salute during ours. We would stand at the position of attention.
If you hadn’t told me, I never would have known, being un-military by profession. To us mere laymen, it was touching. To a professional soldier, it was rude due to lack of salutes. Learn something new every day.