Flag of Italy the Italian tricolour flag." As the arms, blazoned "gules a cross argent", mixed with the white of the flag, it was "fimbriated azure", blue being the dynastic colour, although this does not conform to the heraldic rule of tincture. The rectangular civil and state variants were adopted in 1851. In the same year, the Grand Duchy of Tuscany became constitutional and dropped the Austrian flag, with Austria–Lorraine great coat of arms, in favour of the defaced Italian tricolour with simplified arms. It is worthy of note, however, that the arms bear the red-white-red flag of Austria, the opponent of Italian
Flag of Switzerland squares until 1889, when its dimensions were officially set. The civil and state ensign of Switzerland, used by Swiss ships, boats and non-governmental bodies, is rectangular in shape and has the more common proportions of 3:2. The Swiss flag is one of only two square sovereign-state flags, the other being the flag of Vatican City. The emblem of the Red Cross is the Swiss flag with switched colours. According to the 2017 flag law (SR 232.21), "The Swiss flag shows a Swiss cross on a square background". Special provisions are made for the naval ensign and for civil aircraft identification.