After the Crusaders captured Jerusalem, the Hospitallers also took on a military role. They became known as the Knights of the Order of St John of Jerusalem.

History of the Order

The symbol of the Order, a white eight-pointed cross on a black background, is an international symbol of first aid. It is known as the logo of St John Ambulance, emblazoned on the sides of ambulances and on the uniforms of its highly trained volunteers. However, the eight-pointed cross was also worn on the robes of those first Brother Knights in the hospital in Jerusalem, and it has remained unaltered through the centuries, as an enduring emblem of humanitarian care, and of a charity that dates back almost 1000 years.

By 1080, a hospital had been established in Jerusalem by a group of monks under the guidance of Brother Gerard. Its purpose was to care for the many pilgrims who had become ill on their travels to the Holy Land. The men and women who worked there were members of a new religious order, officially recognised by the Church in 1113. Known as the Hospitallers, they cared for anyone, without distinction of race or faith. After the Crusaders captured Jerusalem, the Hospitallers also took on a military role. They became known as the Knights of the Order of St John of Jerusalem.

When Palestine was recaptured by Muslim forces in 1291, the Order moved briefly to Cyprus and then, in 1309, to Rhodes. The Order remained on Rhodes until 1522, when the Turkish Sultan, Suleiman the Magnificent, conquered the island.

From Rhodes, the Order moved to Malta. After a famous siege by Suleiman in 1565, which the Knights and the Maltese people survived, a new capital city, Valletta, was built. The Order’s ships patrolled the Mediterranean and remained on Malta until 1798, when the island was surrendered to Napoleon. The original Roman Catholic Order still has headquarters in Rome; its full title is the Sovereign Military Hospitaller Order of St John of Jerusalem, of Rhodes and of Malta. It remains a sovereign entity in international law and is engaged in international charity work.

The Clerkenwell Priory

In the 1140s the Priory in Clerkenwell was set up as the English headquarters of the Order. When King Henry VIII split from the Catholic Church and established a new Anglican Church, the Order in England was dissolved and all its lands and wealth were seized by the Crown. The Order was restored briefly by Henry’s Catholic daughter, Queen Mary, who granted it a Royal Charter. However, on the accession of her Protestant sister, Queen Elizabeth I, the Order in England was dissolved for good.

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Commanderies of the Order of Saint John

The Order of Saint John (Knights of Malta, Knights Hospitaller) was organised in a system of commanderies during the high medieval to early modern periods, to some extent surviving as the organisational structure of the several descended orders that formed after the Reformation.

Multi Languages and Orders 

In the Late Middle Ages, the bulk of possessions of the order were in the Holy Roman Empire, France, Castile, Aragon and Portugal, but they extended into Poland, Hungary, southern Italy, England and Denmark, with individual outliers in Ireland, Scotland, Sweden and Greece (the main seat of the order was in Rhodes from 1310 until 1522, and in Malta from 1530 until 1798).

Pre-Reformation
Before the Protestant Reformation, the Order was divided into seven langues or tongues. The langues were divided into great priories, some of which were further divided into priories or bailiwicks (ballei), and these were in turn divided into commanderies.

The largest of the langues by far was the "German" one, which included not only all of the Holy Roman Empire but also the non–German-speaking (Slavic and Hungarian) territories east of Germany. It was divided into five great-priories, the largest of which were Austria-Bohemia and Germany, in turn, divided into major priories or bailiwicks; one of the largest such became independent after the Protestant Reformation as the Order of Saint John (Bailiwick of Brandenburg).

The division of Latin Europe, on the other hand, was more fine-grained, into the Hispanic (Iberian peninsula, at first known as the "Aragonese" langue, but in 1462 split into the Aragonese and the "Castilian" langue, the latter including Castille, Léon and Portugal), Italian (Italian peninsula), Provençal, Auvergnat and French langues.

Finally, the English langue included the order's possessions in the British Isles.

Spanish and Portuguese tongue
great priory Portugal: commanderies Aboim, Algoso, Amieira, Barrô, Belver, Chavão, Covilhã, Coimbra, Faia, Flor da Rosa, Fontelo, Leça do Bailio, Montenegro, Moura Morta, Oliveira do Hospital, Oleiros, Puerto Marin, Poiares, Sta. Marta Penaguião, Sertã, Sobral, Távora, Trancoso, Vera Cruz, Santarém
great priory Amposta
great priory Castille
great priory Navarra
Italian tongue
great priory Barletta
great priory Capua
great priory Sicily
great priory Rome
great priory Pisa
great priory Lombardy
great priory Venice
Provencal tongue
great priory St. Gilles
great priory Toulouse
Auvergnat tongue
great priory Auvergne
French tongue
great priory France
great priory Aquitania
great priory Champagne
English tongue
great priory England
great priory Scotland
great priory Ireland

After the Reformation
A "Russian Grand Priory" with no less than 118 commandries, dwarfing the rest of the Order, was established by Paul I of Russia after the French occupation of Malta in 1798, initiating the Russian tradition of the Knights Hospitaller. Paul's election as Grand Master was, however, never ratified under Roman Catholic canon law, and he was the de facto rather than de jure Grand Master of the Order.

The commandry system survives into the present era, but since the Protestant Reformation the order is split into the four "Alliance orders" of the German Order of Saint John (Bailiwick of Brandenburg), the British Most Venerable Order of the Hospital of Saint John of Jerusalem, the Swedish Johanniterorden i Sverige, and the Dutch Johanniter Orde in Nederland, the Order forms the Alliance of the Orders of St. John of Jerusalem and the Roman Catholic Sovereign Military Order of Malta.

The German (Brandenburg) branch comprises seventeen commandries in Germany, one each in Austria, Finland, France, Hungary, and Switzerland, and a global commandry with subcommandries in twelve other countries (Australia, Belgium, Canada, Colombia, Denmark, Italy, Namibia, Poland, South Africa, the United Kingdom, the United States, and Venezuela).

Following constitutional changes made in 1999, the Priory of England and The Islands was established (including the Commandery of Ards in Northern Ireland) alongside the existing Priories of Wales, Scotland, Canada, Australia (including the Commandery of Western Australia), New Zealand, South Africa, and the United States.

In 2013, the Priory of Kenya and in 2014 the Priory of Singapore were formed. Each is governed by a Prior and a Priory Chapter. Commanderies, governed by a Knight or Dame Commander and a Commandery Chapter, may exist within or wholly or partly without the territory of a priory, known as Dependent or Independent Commanderies, respectively. Any country without a priory or commandery of its own is assumed into the "home priory" of England and The Islands, many of these being smaller Commonwealth of Nations states in which the order has only a minor presence.

Langue (Knights Hospitaller)
Administrative division of the Knights Hospitaller