Emblems of the International Red Cross and Red Crescent Movement in armed conflicts, a denotation which is derived from and defined in the Geneva Conventions. This is called the "protective use" of the symbols. On the other hand, these symbols are used as distinctive logos by those organizations which are part of the International Red Cross and Red Crescent Movement. This is the "indicative use" of the emblems, a meaning which is defined in the statutes of the International Movement and partly in the third Additional Protocol. As a protection symbol, they are used in armed conflicts to mark persons and objects (buildings, vehicles, etc.) which are working in compliance
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