Ancient Greece also experienced its personal custom of banners and flags. Though not as elaborate as Roman banners, the Greeks employed banners with symbols and colours to differentiate their military services units in battle. The shield of Achilles with the head of a gorgoneion is one of the best-known illustrations. https://medievalbannersandflags90751.blogpayz.com/28014198/details-fiction-and-custom-medieval-banners