Medieval Banners & Heraldry

What is heraldry?

Heraldry is the system of identifying people, families, institutions and territories through distinctive designs, colours and symbols.

It developed in medieval Europe alongside a culture of knights, warfare and noble families. A shield covered in a recognisable pattern could identify its owner even when a helmet or armour made the person difficult to recognise.

Over time, heraldic designs appeared not only on shields but also on banners, seals, buildings, clothing and official documents.

Why did medieval armies need banners?

Medieval battles could involve thousands of people fighting in crowded and confusing conditions. There were no radios, modern uniforms or electronic communications.

A banner provided a highly visible way of showing where a lord, king or military group was located. Soldiers could use it as a rallying point and commanders could use it to maintain the organisation of their forces.

Large banners were particularly important because they could be seen above the heads of soldiers. Their designs therefore tended to favour strong colours and simple, recognisable shapes.

Banner, flag and standard — what is the difference?

The words are often used interchangeably today, but medieval vexillology had more specific distinctions.

Banner

A banner was generally a piece of cloth carrying the arms or emblem of a person, family or institution. Heraldic banners could reproduce a coat of arms in a rectangular flag.

Standard

A medieval standard was often a long, tapered flag used to identify a person or military force. It could carry several symbols and was particularly associated with military display.

Pennon

A pennon was a smaller, often triangular or swallow-tailed flag associated with a knight or military leader.

Modern usage has blurred many of these distinctions, but understanding them helps explain why medieval flags did not follow one simple format.

The coat of arms

A coat of arms is a formal heraldic design. At its centre is normally a shield, although a complete heraldic achievement can include other elements such as a helmet, crest, supporters and motto.

The shield is particularly important to flag history because a heraldic design can be reproduced directly as a banner.

For example, the arms of a medieval ruler could appear on a shield in battle and on a banner carried beside the ruler. The same symbols could eventually become associated with a territory rather than just an individual.

Why are heraldic designs so bold?

Medieval heraldry developed rules that encouraged strong contrasts and easily recognised patterns.

Colours and metals traditionally included gules (red), azure (blue), sable (black), vert (green), purpure (purple), or (gold/yellow) and argent (silver/white).

The strong contrast between colours and metals made heraldic designs easier to distinguish at a distance. This principle remains useful in modern flag design.

Crosses in medieval heraldry

The cross became one of the most important symbols in medieval European heraldry, partly because of the Christian character of medieval European society.

Different types of cross developed distinctive forms, including the Cross of St George and the Cross of St Andrew.

These symbols later became central to national flags. England's red St George's Cross and Scotland's white Saltire are particularly important examples.

Lions, eagles and other symbols

Animals were also common in heraldry because they could represent qualities, dynasties or territories.

The lion

The lion became one of Europe's most important heraldic animals. The English royal arms famously use three lions passant, while Scotland is associated with the lion rampant.

The eagle

The eagle was another major heraldic symbol. The double-headed eagle became associated with powerful imperial traditions, while Albania later made the black double-headed eagle the central symbol of its national flag.

Other symbols

Fleurs-de-lis, crowns, stars, crosses, castles, swords and many other objects appear throughout European heraldry.

From personal arms to national symbols

One of the most important developments in flag history was the gradual movement from personal symbols to territorial symbols.

A design might originally represent a king or noble family. As political institutions developed, the same design could become associated with a kingdom or territory.

This helps explain why modern national flags sometimes contain symbols that began centuries earlier as dynastic or heraldic emblems.

England and the royal arms

England provides a good example of the relationship between heraldry and national symbolism.

The three lions associated with the English royal arms became one of the best-known symbols of the English monarchy. The red cross of St George developed separately as a major English flag symbol.

It is important not to confuse the two. The Cross of St George is the national flag of England, while the royal arms are a heraldic achievement associated with the monarchy.

Scotland and the lion rampant

Scotland's royal banner features a red lion rampant on a yellow field, surrounded by a double tressure of fleurs-de-lis.

It is commonly called the Royal Banner of Scotland and is distinct from the Saltire, which is Scotland's national flag.

The distinction is useful because heraldic banners and national flags have different histories even when they are visually connected.

Heraldry and the development of European flags

Medieval heraldry helped establish many of the visual conventions later used by national flags: strong colours, simple geometric divisions, animals, crosses and recognisable emblems.

However, modern flags are not simply coats of arms placed on rectangles. Many national flags deliberately became simpler as they developed, making them easier to recognise, reproduce and use at sea.

The transition from heraldic banners to modern national flags was gradual and differed from country to country.

Flags at sea

The growth of maritime trade and naval warfare increased the importance of flags that could be recognised from a distance.

Ships needed to communicate identity and allegiance without relying on written messages. Strong colours and simple patterns were therefore especially valuable.

This helped encourage the development of flags that could be identified quickly, a principle that remains central to good flag design today.

Heraldry and the Crusades

Heraldic traditions are often discussed alongside the Crusades, although it would be misleading to say that the Crusades suddenly invented heraldry.

Heraldic identification developed over a broader period, particularly during the twelfth and thirteenth centuries. The military and social environment of medieval Europe helped encourage the use of distinctive arms and symbols.

Crosses and other Christian symbols became especially prominent during this period, but their meanings varied according to context.

The birth of modern national flags

For much of medieval history, a flag usually represented a person, dynasty, army, city or institution rather than every citizen of a country.

The idea of a flag representing a modern nation developed much more strongly in the early modern and modern periods.

The rise of nation-states, standing armies, maritime powers and political movements gradually transformed flags into symbols of national identity.

The French Revolution and the development of the tricolour are particularly important milestones in this transition.

Medieval heraldry and modern flag design

Although national flags have evolved considerably, the influence of heraldry remains obvious.

Red, blue, gold, black and white remain common flag colours. Crosses remain central to several national flags, while lions, eagles, crowns and other historic symbols continue to appear around the world.

The main difference is that modern flags are generally designed to work as simple, instantly recognisable symbols rather than detailed heraldic achievements.

A short history timeline

Why medieval heraldry matters to FlagAtlas

Understanding heraldry makes it much easier to understand why modern flags look the way they do.

The symbols on today's flags often have stories that began long before the modern nation-state existed. A cross may have religious roots, an eagle may come from a dynasty, and a colour combination may have originated in medieval arms.

Medieval banners and heraldry therefore form an important bridge between the earliest forms of visual identification and the national flags of the modern world.

Explore more Flag History

Sources & further reading

For further reading on heraldry and medieval flag traditions, see the College of Arms, the Flag Institute and Encyclopaedia Britannica — Heraldry.

Historical terminology and practices varied across Europe and over time, so individual medieval banners should be understood within their particular historical context.