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
International Committee of the Red Cross national relief societies throughout the world. The movement had extended itself beyond Europe and North America to Central and South America (Argentina, Brazil, Chile, Cuba, Mexico, Peru, El Salvador, Uruguay, Venezuela), Asia (the Republic of China, Japan, Korea, Siam), and Africa (South Africa). With the outbreak of World War I, the ICRC found itself confronted with enormous challenges which it could only handle by working closely with the national Red Cross societies. Red Cross nurses from around the world, including the United States and Japan, came to support the medical services of the armed forces of the European countries involved