Flag of Greece At the flag's centre, the royal coat of arms of the new dynasty (Schleswig-Holstein-Sonderburg-Glücksburg) would feature. By a new royal decree of 3 June 1914, the distinguishing flags to be utilised by the various members of the royal family were described. The king's flag was defined as being square in shape and, as in previous flags, featured the coat of arms of the king on a Greek white-cross-on-blue. As the king at the time, Constantine I, was made a field marshal the previous year, the coat of arms on his flag featured a heraldic representation of the Marshal's baton in
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,