Flag of Greece the exact pattern: white cross on blue (plain) for the land flag; nine alternate-coloured stripes with the white cross on a blue field in the canton for the naval ensign; and blue with a blue cross on a white field in the canton for the civil ensign (merchant flag). On 30 June 1828, by decree of the Governor Ioannis Kapodistrias, the civil ensign was discontinued, and the cross-and-stripes naval ensign became the national ensign, worn by both naval and merchant ships. This design became immediately very popular with Greeks and in practice was often used simultaneously with the national (plain
Flag of the Greek Orthodox Church of the Byzantine Empire. The double-headed eagle was historically used as an emblem in the late Byzantine period (14th–15th centuries), but not on flags; rather it was embroidered on imperial clothing and accoutrements by both the Palaiologos emperors of the Byzantine Empire and the Grand Komnenos rulers of the Empire of Trebizond, descendants of the Byzantine imperial family of the same name. The actual flag of the Palaiologan-era Byzantine Empire was based on the tetragrammatic cross in gold on a red background. This design also forms the basis for another flag used by the Orthodox Church of Greece, with the