Heraldry encompasses all of the duties of a herald, including the science and art of designing, displaying, describing and recording coats of arms and badges, as well as the formal ceremonies and laws that regulate the use and inheritance of arms. The origins of heraldry lie in the medieval need to distinguish participants in battles or jousts, whose faces were hidden by steel helmets.

Vexillology (from the Latin vexillum, a flag or banner) is the scholarly study of flags, including the creation and development of a body of knowledge about flags of all types, their forms and functions, and of scientific theories and principles based on that knowledge. Flags were originally used to assist military coordination on the battlefield, and have evolved into a general tool for signalling and identification, particularly identification of countries.

The coat of arms of Amsterdam is the official symbol of the city of Amsterdam. It consists of a red and black shield with three silver Saint Andrew's Crosses, the Imperial Crown of Austria, two golden lions, and the motto of Amsterdam. Several heraldic elements have their basis in the history of Amsterdam. The crosses are thought to represent the three traditional dangers to the city: flood, fire and pestilence. The crown was awarded in 1489 by Maximilian I, Holy Roman Emperor, out of gratitude for services and loans. The crosses and the crown can be found as decorations on different locations in the city. (more...)

Attributed arms are coats of arms given to legendary figures, or to notable persons from times before the rise of heraldry. Beginning in the 12th century, imaginary arms were assigned to the knights of the Round Table, and soon arms were given to biblical figures, to Roman and Greek heroes, and to kings and popes who had not historically borne arms. The specific arms could vary, but the arms for major figures soon became fixed.

Notable arms attributed to biblical figures include the arms of Jesus based on the instruments of the Passion, and the shield of the Trinity. Medieval literature attributed coats of arms to the Nine Worthies, including Alexander the Great, Julius Caesar, and King Arthur. Arms were given to many kings predating heraldry, including Edward the Confessor and William I of England. These attributed arms were sometimes used in practice as quarterings in the arms of their descendants. (more...)

The Raven banner (in Old Norse, Hrafnsmerki; in Old English, Hravenlandeye) was a flag, possibly totemic in nature, flown by various viking chieftains and other Scandinavian rulers during the ninth, tenth and eleventh centuries CE. The flag, as depicted in Norse artwork, was roughly triangular, with a rounded outside edge on which there hung a series of tabs or tassels. It bore a resemblance to ornately carved "weather-vanes" used aboard Viking longships.

Scholars conjecture that the raven flag was a symbol of Odin, who was often depicted accompanied by two ravens. Its intent may have been to strike fear in one's enemies by invoking the power of Odin. As one scholar notes: "The Anglo-Saxons probably thought that the banners were imbued with the evil powers of pagan idols, since the Anglo-Saxons were aware of the significance of Óðinn and his ravens in Norse mythology." (more...)