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somsak ,
In the military etiquette, nations may have competitive culture, but professionalism is always emphasized. I personally had served in the JMSDF , the culture of military professionalism and etiquette was always stressed. Towards our American partners, to South Koreans, to Chinese, to Taiwanese, to Filipinos, to Russians etc. When I served in the JS Chokai years ago, we interacted with Russian ships near our territorial waters, as well as met them face to face in international waters. Always were professional with us.
The culture of professionalism and honor is imbedded amongst all military personnel. This transcends national identity.