Flag of the Greek Orthodox Church added inscription of TOYTῼ NIKA (i.e. "in hoc signo vinces"). Flag of the Greek Orthodox Church The Ecumenical Patriarchate and Mount Athos, and also the Greek Orthodox Churches in the diaspora under the Patriarchate use a black double-headed eagle in a yellow field as their flag or emblem. The eagle is depicted as clutching a sceptre and an orb with a crown above and between its two heads. An earlier variant of the flag, used in the 1980s, combined the double-headed eagle design with the blue-and-white stripes of the flag of Greece. The design is sometimes dubbed the "Byzantine imperial
Flag of Greece the royal flags, which featured the coat of arms of the House of Schleswig-Holstein-Sonderburg-Glücksburg on a square version of the national flag. A square version of the land flag with St. George in the centre was adopted on 9 April 1864 as the Army's colours. The exact shape and usage of the flags was determined by Royal Decree on 26 September 1867. By a new Royal Decree, on 31 May 1914, the various flags of Greece and its military were further regulated. By this decree, the flag with the crown was adopted for use as a state flag by ministries,