Emblems of the International Red Cross and Red Crescent Movement with the rules of the Geneva Conventions. In this function, they can also be used by organizations and objects which are not part of the International Red Cross and Red Crescent Movement, for example the medical services of the armed forces, civilian hospitals, and civil defense units. As protection symbols, these emblems should be used without any additional specification (textual or otherwise) and in a prominent manner which makes them as visible and observable as possible, for example by using large white flags bearing the symbol. Four of these symbols, namely the Red Cross, the Red Crescent, the Red Lion
Thai Red Cross Society Plien acted as the society secretary. The society's name was later changed to the Siam Red Cross Society and, following the renaming of the country, the Thai Red Cross Society. The society was officially recognized by the International Committee of the Red Cross on 27 May 1920, and membership in the International Federation of Red Cross and Red Crescent Societies (then the League of Red Cross Societies) was granted on 8 April 1921. Following the statutes of the International Red Cross and Red Crescent Movement, the Thai Red Cross Society provides humanitarian aid and relief services in times of war