A flag is a piece of fabric with a distinctive design and colours. It is used as a symbol, a signalling device, or for decoration. The term flag is also used to refer to the graphic design employed, and flags have evolved into a general tool for rudimentary signalling and identification, especially in environments where communication is challenging. Many flags fall into groups of similar designs called flag families. The study of flags is known as "vexillology" from the Latin vexillum, meaning "flag" or "banner".
Heraldry is a discipline relating to the design, display and study of armorial bearings, as well as related disciplines, such as vexillology, together with the study of ceremony, rank and pedigree. Armory, the best-known branch of heraldry, concerns the design and transmission of the heraldic achievement. The achievement, or armorial bearings usually includes a coat of arms on a shield, helmet and crest, together with any accompanying devices, such as supporters, badges, heraldic banners and mottoes.
Flag terminology is the nomenclature, or system of terms, used in vexillology, the study of flags, to describe precisely the parts, patterns, and other attributes of flags and their display.
Vexillology is the study of the history, symbolism and usage of flags or, by extension, any interest in flags in general.
A saltire, also called Saint Andrew's Cross or the crux decussata, is a heraldic symbol in the form of a diagonal cross. The word comes from the Middle French sautoir, Medieval Latin saltatoria ("stirrup").
The national flag of Greece, popularly referred to as the "turquoise and white one" or the "azure and white", is officially recognised by Greece as one of its national symbols and has 5 equal horizontal stripes of blue alternating with white. There is a blue canton in the upper hoist-side corner bearing a white cross; the cross symbolises Eastern Orthodox Christianity. The blazon of the flag is Azure, four bars Argent; on a canton of the field a Greek cross throughout of the second. The official flag ratio is 2:3. The shade of blue used in the flag has varied throughout its history, from light blue to dark blue, the latter being increasingly used since the late 1960s. It was officially adopted by the First National Assembly at Epidaurus on 13 January 1822.
The national flag of the Islamic Republic of Iran, also known as the tricolor, is a tricolor featuring the Pan-Iranian colors comprising equal horizontal bands of green, white and red with the national emblem ("Allah") in red centred on the white band and the takbir written 11 times each in the Kufic script in white, at the bottom of the green and the top of the red band. After the Iranian Revolution of 1979, the present-day flag was adopted on 29 July 1980.
Derafsh Kaviani was the legendary royal standard Derafsh of Iran (Persia) used since ancient times until the fall of the Sasanian Empire. The banner was also sometimes called the "Standard of Jamshid", the "Standard of Fereydun" and the "Royal Standard".
The eagle is used in heraldry as a charge, as a supporter, and as a crest. Heraldic eagles can be found throughout world history like in the Achaemenid Empire or in the present Republic of Indonesia. The European post-classical symbolism of the heraldic eagle is connected with the Roman Empire on one hand, and with Saint John the Evangelist on the other.
An aquila was a prominent symbol used in ancient Rome, especially as the standard of a Roman legion. A legionary known as an aquilifer, the "eagle-bearer", carried this standard. Each legion carried one eagle.
The double-headed eagle is an iconographic symbol originating in the Bronze Age. A heraldic charge, it is used with the concept of an empire. Most modern uses of the emblem are directly or indirectly associated with its use by the late Byzantine Empire, originally a dynastic emblem of the Palaiologoi. It was adopted during the Late Medieval to Early Modern period in the Holy Roman Empire, Albania and in Orthodox principalities, representing an augmentation of the (single-headed) eagle or Aquila associated with the Roman Empire. In a few places, among them the Holy Roman Empire and Russia, the motif was further augmented to create the less prominent triple-headed eagle.
The vexillum was a flag-like object used as a military standard by units in the Roman army. A common vexillum displayed imagery of the Roman aquila on a reddish backdrop.
The Emblem of Iraq since the rule of Baathism features a golden black eagle looking towards the viewer's left dexter. The eagle is the Eagle of Saladin associated with 20th-century pan-Arabism, bearing a shield of the Iraqi flag, and holding a scroll below with the Arabic words جمهورية العراق.
The National Emblem of Iran since the Iranian Revolution features four curves and a sword, surmounted by a shadda. It is very similar to the Sikh Khanda symbol. The emblem was designed by Hamid Nadimi, and was officially approved by Ayatollah Ruhollah Khomeini, the first supreme leader of Iran, on 9 May 1980.
The Lion and Sun is one of the main emblems of Iran (Persia), and was an element in Iran's national flag until the 1979 revolution and is still commonly used by nationalists and opposition groups of the Islamic Republic government. The motif, which illustrates ancient and modern Iranian traditions, became a popular symbol in Iran in the 12th century. The lion and sun symbol is based largely on astronomical and astrological configurations: the ancient sign of the sun in the house of Leo, which itself is traced back to Babylonian astrology and Near Eastern traditions.
Throughout most of the history of Poland, the banner of Poland was one of the main symbols of the Polish State, normally reserved for use by the head of state. Although its design changed with time, it was generally a heraldic banner, i.e., one based directly on the national coat of arms: a crowned White Eagle on a red field. The banner should not be confused with the flag of Poland, a white and red horizontal bicolor, officially adopted in 1919.
For most of its history, the Eastern Roman (Byzantine) Empire did not use heraldry in the Western European sense of permanent motifs transmitted through hereditary right. Various large aristocratic families employed certain symbols to identify themselves; the use of the cross, and of icons of Christ, the Theotokos and various saints is also attested on seals of officials, but these were often personal rather than family emblems. Likewise, various emblems were used in official occasions and for military purposes, such as banners or shields displaying various motifs such as the cross or the labarum. Despite the abundance of pre-heraldic symbols in Byzantine society from the 10th century, only through contact with the Crusaders in the 12th century, and particularly following the Fourth Crusade (1202–1204) and the establishment of Frankish principalities on Byzantine soil from 1204 onwards, did heraldic uses penetrate in Byzantium. A native Byzantine heraldry began to appear in the middle and lower rungs of aristocratic families in the 14th century, coinciding with the decline of imperial authority and with the fragmentation of political power under the late Palaiologan emperors. However, it never achieved the breadth of adoption, or the systematization, of its Western analogues.
The Derafsh was a flag-like object used as a military standard by units in the Ancient Iranian (Persian) army.
An insignia is a sign or mark distinguishing a group, grade, rank, or function. It can be a symbol of personal power or that of an official group or governing body.
A flag is a distinctive piece of fabric used as a symbol, a signalling device, or for decoration. While the origin of flags is unknown, flag-like symbols have been described as far back as 11th century BC China and have been used by other ancient civilisations such as Egypt and Rome.
