The Red Cross emblem was officially approved in Geneva in 1864, a year after the International Committee of the Red Cross (ICRC) was founded.
The emblem, endorsed by the 16 signatories of the Geneva Conventions on international humanitarian law, is based on the Swiss flag with colours reversed.
The Red Crescent emblem was first used by ICRC volunteers during the armed conflict between Russia and Turkey (1876-1878).
The symbol was officially adopted in 1929, and so far 25 Islamic states have recognised it.
Israel has called for the use of the Red Star of David emblem since 1949, but the International Red Cross and Red Crescent Movement does not officially recognize the Israeli first-aid society, Magen David Adom.