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 of the colours of that flag, in order to honour Switzerland, where the first Geneva Convention was held, and its inventor and co-founder, the Swiss Henry Dunant. The modern banner of the Pontifical Swiss Guard was designed in 1912–14 by commander Jules Repond. The design has a Swiss cross design based on the 18th-century regimental flags of the Swiss Guards, with the papal coat of arms of the reigning pope in the upper hoist and the Della Rovere coat of arms of Julius II in the lower fly, and a vignette with the commander's coat of arms in the center.