
Aninsignia (from Latin insignia, plural ofinsigne 'emblem, symbol, ensign') 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.
An insignia, which is typically made of metal or fabric, is a standalone symbol of a particular or general authority. Together, insignias form adecoration with the different elements of a rank, grade, or dignity.
There are many types of insignia, includingcivil andmilitary decorations,crowns,emblems, andcoats of arms.
"Insignia" can be used either as aplurale tantum word, i.e. unchanged for both singular and plural, or it can take the plural form "insignias", both equally valid options. The singular "insigne" is rarely used.
The use of insigniaspredates history, both for personal and group (especially military) use. When the insignia was meant to be seen, it was placed at top of a pole or the head of aspear. The Persians used a golden eagle as an insignia, the Assyrians a dove, and the Armenians a lion. The eagle came to serve a more important function as theaquila, the insignia of theRoman legions, around 100 years BCE.
At the earliest times, military insignias were very simple. Tree branches, mauled birds, heads of beasts, or a handful of dry grass, were placed on top of a pole or long stick, so that the combatants could recognize themselves in the fight, or to signpost a meeting place in retreat or defeat. But as the arts of war were refined, sturdier and brighter insignias were designed, and everyone wanted theirs to use characteristic symbols.
Among the Jews, each of thetwelve Tribes of Israel had an insignia of a distinctive colour, on which was a figure or symbol that designated the tribe, according to theBlessing of Jacob.[1] Scripture mentions the lion as the symbol of theTribe of Judah, the ship that of theTribe of Zebulun, the stars and firmament that of theTribe of Issachar, and so on.
Idolatrous peoples had images of their gods or symbols of their princes on their insignias. The Egyptians chose theparrot and thecrocodile, among others; the Assyrians and Babylonians had doves, asJeremiah records in chapters XXV and XLVI of his prophecies; because the name "Semiramis", originally "Chemirmor", means "dove".
In Heroic times, ashield, helmet, orcuirass on a spearhead were the military insignias of the Greeks. Nevertheless,Homer records that at theSiege of Troy Agamemnon used a purple cloth to mark the meeting-point for his troops.[2]
Little by little, insignias were used on swords, shields, coins. By 600BCE theCorinthians had already adopted a winged-horse,Pegasus, and the archaic letterkoppa, the initial of the town's name.[3][4] ThenAthens hadAthena, the olive tree and theowl,Theba asphinx,Messinia andLaconia used the initial letter of their name. Their colomies followed their metropolis and in this waySyracuse, a Corinthian colony, also adopted Pegasus as the symbol of the town.
The principal insignia of the Persians was a golden eagle on the end of a pike, placed on a wagon guarded by two of the most distinguished officers.Xenophon assumes that this insignia was used by all the kings of Persia.[5]
Among the ancient armies, sometimes raising a mantle of purple (or any other color) was all that was needed to make an announcement or give the order to attack.

At first, the Romans had nothing more than a handful ofhay as an insignia, placed at the top of a pole like most others. Over time they took the figures of awolf, a horse, aboar, and aminotaur until, according toPliny the Elder, in the second year of his consulateGaius Marius replaced them all with the eagle, which became the standard insignia for the legions.[6] Each legion, or at least the first, carried a silver eagle with wings extended, on a sculptural base and placed at the top of a pike. The eagle was entrusted to thecenturions of theTriarii.
In the age of the Emperors, the armies were often identified by a silver hand with an open palm (manus), known as theSignum manipuli, as a symbol of loyalty.[7] The insignia was carried by an officer called thesignifer. Many examples are seen onTrajan's Column, for which the preliminary plans had it topped with a bird, probably an eagle.
Monuments surviving from antiquity usually are adorned with the insignia of crowns and small shields calledclypei, on which probably would be portraits of gods or Roman heroes, with other emblems representing each legion. Somebattlements are adorned with insignias as trophies of war.
WhenGermanicus died, many blamedPiso and the legions removed all mention of him from their insignia.

An eagle is visible on the top of an insignia on Trajan's Column, on a smallvexillum or standard. According toVegetius, theRoman cohorts and centurions wrote their names in the middle of their shields, so that every soldier would know his own.[8] In the centuries before Vegetius, only maniples had insignia: cohorts did not. Sometimes only thevexillum in purple, and the insignia of the unit, were put atop a pike with no further adornment.
The insignias below the eagle were composed of medallions, placed one above the other and nailed to the spear rod. These medallions bore the lettersSPQR,Senatus Populusque Romanus, and a portrait of the Emperor.
Each maniple and eachcenturia had an insignia of the same colour, on which the name of the legion and number of the centuria was embroidered in gold.
Thelabarum, a standard in whichConstantine the Great placed aChristogram, differed from thevexillum in that it was flat and retained its square shape, as seen in the medals ofTheodosius the Great and others. Thevexillum, which appears often on Trajan's Column, was not protected but at the top.
Vegetius records that in his time the banners in the form ofdragons served as insignia to the barbarians. When these came under control of the Romans, they would probably retain their military insignia, which could be confused with the eagles of the Roman legions.
Officers of the Roman legions responsible for carrying the insignia, calledinsigniferos, be theyinfantry orcavalry would cover theirarmor with the pelt of a bear, lion, or other ferocious animal, to indicate the courage and tenacity with which they would defend it.
In times of peace the legions that were stood down deposited their insignias in the public treasury under the custody of thequaestores, who would withdraw them and take them to theCampus Martius when the troops were mobilized, asLivy says:Signa quaestores ex cerario ferre ("Thequartermasters must dispense the signs from their stores").
Insignias of the AncientGauls and other barbarians represented several animals, including the bull, the lion, and the bear. TheRipuarian Franks had a sword as the characteristic symbol in their insignia, which among them represented the God of war; theSicambri a head of anox, which, according to Beneton, meant the godApis, an Egyptian deity, from which country they were supposedly descendants; the firstFrankish kings had atoad.[9]

Duringthe Crusades, all the crusaders that went toPalestine put theChristian cross on their banners, often aMaltese cross[10] orJerusalem cross.[11]
In the Middle Ages each town or village's crest was carried in the militia, for recognition, but also reverence: the settlement's patron saint was painted on the crest, and prayed to for protection. The patron saint of thefeudal lord was also put thereon, and on swords and shields. When fixed and permanent troops were established, the princes gave them flags adorned with their swords and shields, or those of the leaders of each body. Some particulars of the military units were also shown on them. Soon the great and the good were pleased to lend theircoats of arms to favored units.
The standards and insignias of the Turks were generally ofsilk cloth of various colors, with ascimitar embroidered with gold and various Arabic characters. At the spearhead was a golden knob, topped by a silver half moon.[12] In addition, they also used to hang some ponytails or large bundles ofhorsehair, whose number indicated the dignity of the general orpasha commanding the army. When the chief lord commanded in person or was in the army, the flag or main banner bore seven ponytails (Turkish:tug).
The most important standard for the Turks is that ofMuhammad, considered the most precious safeguard. It is usually kept in a golden ark, along with theQuran. It is only removed in the direst circumstances.

The Royal Standard of the Mexicans, as Solís calls it (the standard seized byHernán Cortés at theBattle of Otumba) was a filigree of solid gold hanging from a pike, with many colored feathers, which would distinguish it from lesser insignia. This standard was never removed except under the greatest duress,[13] and was never entrusted to same general in chief. Its loss prefigured a loss in battle, so Hernán Cortés fought to the end to seize it, and this decided the battle.
In antiquity, the animate and inanimate objects that were used on insignia derived ultimately from deities and were revered for that reason. With the rise of Christianity in the Middle Ages, those objects were replaced with the Christian cross and the emblems of patron saints, so that insignias were respected even more than they had been before. Even in modern times, loss of an insignia or standard is seen as a profoundly dishonorable misfortune.[14]
By Divine order, the Israelites encamped "each person by his flag, according to the insignia of his ancestor's house, at a distance surrounding the Tent of Meeting shall they encamp" (Numbers 2:2). According to the Midrash Rabbah Numbers 2:7, this meant that each tribe had a specific color and emblem
His purple robe, bright ensign of command
According to Pliny, Consul Gaius Marius designated the eagle the exclusive military standard of the Roman legion, replacing the wolf, ox with a man's head, horse and boar
He was standard-bearer for the centurial signum, a spear shaft decorated with medallions and topped with an open hand to signify loyalty
18. The names and ranks of soldiers are to be written on the names of their shields
The emblems of the barbarian hordes which, rushing upon the Roman Colossus, over-run and subdued Gaul, and established themselves in place of the aboriginal inhabitants, are so numerous and diverse, it is impossible to determine with precision the ensigns of each. To the Franks are ascribed the half-moon, toads, serpents, and the lion; the last is supposed to be the parent of the seventeen Belgic lions. According to many authorities, the Sicambri bore a bull's head; the Suevi, a bear; the Alani, a cat, the Saxons, a horse; the Cimbri and most of the Celts, a bull. The military ensign of the Goths was a cock
The Maltese Cross formally adopted by the Knights Hospitallers of St. John in 1126, stylistically owes its origins to the crosses used in the crusades, when it was identified as the symbol of the "Christian warrior"
Also known as the Crusader cross, the Jerusalem cross dates back to the 11th and 12th century when the Crusaders captured Jerusalem in 1099
The standard in silk, cloth of gold, a base-colour of violet blue with a (half)-moon at the top
Near him was the royal standard of Mexico, which was never brought into the field but on the most urgent occasions: it was a net of masly gold, crowned with a plume of variegated feathers, and fastened to a pike