Crosses in heraldry Crowns. Several national flags are based on late medieval war flags, including the white-on-red crosses of the flag of Denmark and the flag of Switzerland. The elongated Nordic cross originates in the 18th century due to the rectangular shape of maritime flags. The Red Cross flag originates in 1906 as a colour-switched version of the flag of Switzerland. Crosses in heraldry The cross is a basic design of two intersecting lines (X) used from pre-historic times. Its use was enormously expanded as the Christian cross, from about the 6th century, deriving from a T-shape representing the gibbet ("stauros", "crux") of
International Red Cross and Red Crescent Movement decided to promote officially the idea that the Red Cross flag had been formed by reversing the federal colours of Switzerland, although no clear evidence of this origin had ever been found. The Red Crescent emblem was first used by ICRC volunteers during the armed conflict of 1876–8 between the Ottoman Empire and the Russian Empire. The symbol was officially adopted in 1929, and so far 33 states in the Muslim world have recognized it. In common with the official promotion of the red cross symbol as a colour-reversal of the Swiss flag (rather than a religious symbol), the red