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
Flag of Switzerland The Swiss cross is defined as Swiss Standard German consistently uses (cognate with "vane") rather than the term used for national flags in Germany. The name of the flag of the Swiss Confederation is a nominal compound, . While the proportions of the cross have been fixed since 1889, the size of the cross relative to the flag (the width of the margin separating the "cross couped" from the edge of the flag) had not been officially fixed prior to 2017. The annex to SR 232.21 provides an image specifying that the margin is to be of the same width