Flag of Greece ensign Greek Orthodox merchants (better: merchants from the Greek-dominated Orthodox "millet") were allowed to fly on their ships, combining stripes with red (for the Ottoman Empire) and blue (for Orthodoxy) colours. After the Treaty of Küçük Kaynarca, Greek-owned merchant ships could also fly the Russian flag. During the uprising of 1769 the historic blue cross on white field was used again by key military leaders who used it all the way to the revolution of 1821. It became the most popular Revolution flag, and it was argued that it should become the national flag. The "reverse" arrangement, white cross on
Flag of Greece place of Saint George. Since the Fire Service and the Hellenic Police are considered civilian agencies, they are not assigned war flags. They use the National Flag instead. Identical rules were applied to the former Cities Police. However, recently the Police Academy has been assigned a war flag, and they paraded for the first titme with this flag on Independence Day, March 25, 2011. The flag is similar to the Army war flag, with the image of St George replaced with that of Artemius of Antioch. Throughout the history of Greece, various heads of state have used different flags. The