Flag of Greece Byzantine double-headed eagle (see below), the cross, depictions of saints and various mottoes. The Christian Greek sipahi cavalry employed by the Ottoman Sultan were allowed to use their own, clearly Christian flag, when within Epirus and the Peloponnese. It featured the classic blue cross on a white field with the picture of St. George slaying the dragon, and was used from 1431 until 1639, when this privilege was greatly limited by the Sultan. Similar flags were used by other local leaders. The closest to a Greek "national" flag during Ottoman rule was the so-called "Graeco-Ottoman flag" (Γραικοθωμανική παντιέρα), a civil
Flag of Greece flags was the "labarum". In the surviving pictorial sources of the middle and later Empire, primarily the illustrated Skylitzes Chronicle, the predominating colours are red and blue in horizontal stripes, with a cross often placed in the centre of the flag. Other common symbols, prominently featuring on seals, were depictions of Christ, the Virgin Mary and saints, but these represent personal rather than family or state symbols. Western European-style heraldry was largely unknown until the last centuries of the Empire. There is no mention of any "state" flag until the mid-14th century, when a Spanish atlas, the "Conosçimiento de todos