List of oldest military units and formations in continuous operation

This is a list of oldest military units and formations in continuous operation. In continuous operation here means not units that no longer exist, or recent creations sharing only the name with an older unit.

Please note: Whereas modern standing armies first developed in the 15th century, the defining terminology for contemporary military units and formations, such as company, battalion, regiment etc. mostly arose in the early modern period, during the 16th and 17th centuries.

Oldest active military units still in operation

Year Heraldry Name Founder Founding
location
Current
location
Notes
1248 King's Own Immemorial 1st Infantry Regiment Ferdinand III of Castile Crown of Castile SpainMadrid, Spain It was one of the first standing units in Europe since the fall of the Roman Empire, remaining in the order of battle of the Castilian and Spanish armies since its creation. At present the Regiment is the Unit responsible for providing the central seat of Spanish Army Headquarters security, services, and support needed for its functioning.
1337 Royal Militia of the Island of Jersey King Edward III of England England England United Kingdom United Kingdom In 1987, it was re-formed as a Territorial Army regiment, the Jersey Field Squadron (The Royal Militia Island of Jersey), 111th Regiment, Royal Engineers, later 73rd Regiment, Royal Engineers. In 2007, it came under the operational command of the Royal Monmouthshire Royal Engineers (Militia).
1479 1st Infantry Regiment King Louis XI of France  Kingdom of France France Sarrebourg, France Founded in 1479-1480 by King Louis XI as Bandes de Picardie. It became the Légion de Picardie in 1558 during the Italian War of 1551-1559 and then Régiment de Picardie on May 29, 1569. It was ultimately renamed 1er régiment d'infanterie de ligne in 1791 after the military reforms of Louis Le Bègue Duportail.[1] It is now part of the Franco-German Brigade (French units of the brigade are part of 1st Division) and was recently deployed in Afghanistan, Mali and the Central African Republic.
1506 Papal Swiss Guard Pope Julius II  Papal States   Vatican City The Pontifical Swiss Guard is one of the oldest active military units presently in existence.[2]They are famous for their last stand which allowed Pope Clement VII to flee from Rome during War of the League of Cognac.
1509 9th Infantry Regiment “Soria” Ferdinand II of Aragon Kingdom of Naples, Crown of Aragon SpainFuerteventura, Canary Islands, Spain Founded in 1509 as "Tercio of Napoli" or "Tercio de Zamudio". It is the second oldest regiment still used for overseas military operations.[3][4]
1521 Life Guards Sweden Dalarna, Sweden Sweden Stockholm, Sweden Life Guards, formerly Svea Life Guards, dates back to the year 1521, when the men of Dalarna chose 16 "young able men" as body guards for Gustav Vasa, subsequent King of Sweden.
1534 Tercio of Sicily Charles V, Holy Roman Emperor Kingdom of Sicily, Spanish Empire SpainSan Sebastián, Basque Country, Spain It was created to protect the Spanish possessions in South Italy, where it was stationed for 2 centuries. It has participated in almost all conflits that involved Spain, and in recent years, its units have participated in international missions in Bosnia Herzegovina, Lebanon, Kosovo, Iraq, and Afghanistan.
1536 Life Regiment Hussars Sweden Uppland and Södermanland Sweden Karlsborg, Sweden The Life Regiment traces back to two drafted units set up by Gustav Vasa in 1536 to lessen the dependency on foreign mercenaries. The regiment has fought in many battles and is one of Europe's most victorious regiments. Today the regiment participates in more international military missions for Sweden than any other regiment.
1537 Honourable Artillery Company King Henry VIII England England United Kingdom City of London Officially incorporated by Royal Charter in 1537 by King Henry VIII. The Company fought with distinction in both World Wars and its current Regiment is the oldest surviving regiment in the British Army, and the second most senior in the Army Reserve. Today its purpose is to attend to the "better defence of the realm" by the support of the HAC Regiment and a detachment of Special Constabulary to the City of London Police.
1537 Spanish Navy Marines Charles V, Holy Roman Emperor Kingdom of Naples, Spanish Empire Spain Spain The Infantería de Armada (Navy Infantry) was created by Charles V in 1537, when he permanently assigned the Compañías Viejas del Mar de Nápoles (Naples Sea Old Companies) to the Escuadras de Galeras del Mediterráneo (Mediterranean Galley Squadrons).
1537 6th Infantry Regiment “Saboya” Charles V, Holy Roman Emperor Duchy of Savoy, Spanish Empire Spain Badajoz, Extremadura, Spain It was created as the "Tercio of Savoy" in 1537. Nowadays is a mechanized infantry unit in the Spanish Army.
1537 3rd Infantry Regiment "Príncipe" Charles V, Holy Roman Emperor Duchy of Milan, Spanish Empire Spain Siero, Principality of Asturias, Spain It was created as "Tercio of Lombardy (old)" in 1537. Nowadays is an Airborne Light Infantry unit in the Spanish Army.
1539 Royal Monmouthshire Royal Engineers King Henry VIII of England England England United Kingdom Monmouth The Royal Monmouthshire Royal Engineers (Militia) is the most senior regiment in the British Army Reserve, having given continuous loyal service to the crown since 1539. It is part of the reserve forces, and is the only remaining Militia unit in the British Army.
1556 2nd Dragoon Regiment (France) Louis, Prince of Condé (1530–1569) Kingdom of France Kingdom of France France France Despite the recent formation of the regiment in its current configuration, it is the oldest French cavalry regiment, dating back to 1556. The French Revolution gave it the designation of the second regiment of dragoons in the French Army, and with brief interruptions it has served under this name in successive French armies ever since.
1566 4th Mountain Hunters Regiment "Galicia" Philip II of Spain Duchy of Milan, Spanish Empire SpainJaca, Aragón, Spain It was created as "Tercio de Lombardía" to protect the Spanish possessions in North Italy, and from there, it was deployed with the Army of Flanders. It has participated in a great number of military actions in Europe, America and Africa, and now it is stationed in the Pyrenees mountains.
1573 50th Infantry Regiment “Canarias” Philip II of Spain Canary Islands, Spanish Empire SpainCanary Islands, Spain It was raised as "Tercio de Las Palmas" (Militia) on Abril 28, 1573, to protect the island of Gran Canaria from pirates and other European powers, its mission for centuries. It has also participated in actions in the Iberian peninsula and Africa, and in recent times, in Bosnia-Herzegovina and Afghanistan.
1613 Skaraborg Regiment (infantry) King Gustavus Adolphus of Sweden Sweden Kingdom of Sweden Sweden Sweden In 1942 converted to Skaraborg Regiment (armoured);
in 2000 changed back to Skaraborg regiment
1614 Guard Hussar Regiment (Denmark) King Christian IV of Denmark Denmark Denmark Denmark Denmark Unit amalgamated with and perpetuates Zealand Life Regiment, which was disbanded on 1 January 2001
1618 Portuguese Marine Corps Portugal Kingdom of Portugal Portugal Portugal Consists of 2 battalions
1636 182nd Infantry Regiment (United States)  Massachusetts Bay Colony Massachusetts Massachusetts United States The 182nd Infantry Regiment is the oldest Infantry Regiment in the United States Army
1636 181st Infantry Regiment (United States)  Massachusetts Bay Colony Massachusetts Massachusetts United States The 181st Infantry Regiment is the second oldest Infantry Regiment in the United States Army
1636 101st Field Artillery Regiment  Massachusetts Bay Colony Massachusetts Massachusetts United States The 101st Artillery Regiment is the oldest Artillery unit of the US Army; was founded the same time as the 181st Infantry Regiment
1636 101st Engineer Battalion  Massachusetts Bay Colony Massachusetts Massachusetts United States The 101st Engineer Battalion was founded at the same time as the 181st Infantry Regiment
1638 211th Military Police Battalion  Massachusetts Bay Colony Massachusetts Massachusetts United States The 211th Military Police Battalion goes back to 1741; the 772nd Military Police Company of this Battalion was founded in 1638. Part of the Massachusetts National Guard.
1641 15th Infantry Regiment (Portugal) Portugal Kingdom of Portugal Portugal Portugal
1642 Scots Guards (third regiment of foot guards) King Charles the First  Scotland  United Kingdom Raised in 1642 to form a personal body guard to king charles the first when he campaigned in Ireland; became part of English Army in 1661
1649 12th Cavalry Regiment "Farnesio" Frederick, Landgrave of Hesse-Eschwege Spanish Netherlands, Spanish Empire SpainSantovenia de Pisuerga, Castile and León, Spain It was created on March 7, 1649, in the Landgrave of Hesse-Eschwege. Nowadays is a reconnaissance cavalry regiment stationed in Castile and León, Spain.
1650 Coldstream Guards George Monck Commonwealth of England Commonwealth of England United Kingdom United Kingdom Raised in 1650; became part of the English Army in 1661
1652 276th Engineer Battalion (United States) Virginia Virginia United States United States United States The 1953 US Army Lineage Book Infantry traces the 176th Infantry Regiment origins to 1652; 176th Infantry was a predecessor unit of the 276th Engineer Battalion
1656 5th Dragoon Regiment (France) Kingdom of France Kingdom of France France France Created under the Ancien Régime in 1656, last disbanded in 2003 and reactivated in 2015.
1656 Grenadier Guards  England United Kingdom United Kingdom Senior Regiment of the Guards Division
1656 10th Cavalry Regiment “Alcántara” Philip IV of Spain Spanish Netherlands, Spanish Empire SpainMelilla, Spain It was created in Brussels on February 19, 1656, as "Tercio de Nestién". Nowadays is an armored cavalry regiment stationed in the Spanish north African city of Melilla.
1657 Jutland Dragoon Regiment Field marshal Ernst Albrecht von Eberstein Denmark Denmark Denmark Denmark
1658 Royal Life Guards (Denmark) King Frederick III of Denmark Denmark Denmark Denmark Denmark Both a Guard/Ceremonial unit of the Danish Monarch and Infantry Regiment of the Danish Army
1659 1° Reggimento "Granatieri di Sardegna" (Italy) Duke Carlo Emanuele II di Savoia Savoy Savoy Italy Italy Formed April 18, 1659 as the "Reggimento delle Guardie"
1660 Life Guards (United Kingdom) Charles II England England United Kingdom United Kingdom Senior Regiment of the British Army
1663 31st Infantry Regiment "Asturias" General Junta of the Principality of Asturias Principality of Asturias, Spanish Empire SpainEl Goloso, Madrid, Spain It was first raised as "Tercio de Asturias" in the autonomous region of Asturias on February 3, 1663, again in 1690, and again and definitely in 1706. Nowadays is a mechanized infantry unit in the Spanish Army.
1664 Royal Marines King James II  England United Kingdom United Kingdom Now roughly small brigade size.
1665 Korps Mariniers Premier Johan de Witt Dutch Republic Dutch Republic Netherlands Netherlands Founded as Regiment de Marine. Now roughly small brigade size.
1665 2nd Infantry Regiment "La Reina" Dona Maria Anna of Austria Crown of Castile, Spanish Empire SpainCórdoba, Andalucia, Spain It was created as "Queen Body Guards", by the Governor Queen Dona Maria Anna of Austria, by Royal Decree of August 22, 1665, during the minority of Charles II of Spain, for the guard of the Real person of the King.
1668 12th Cuirassier Regiment (France) Kingdom of France Kingdom of France France France Raised as a regiment under the name of the Régiment Dauphin - Cavalerie or, in English, Dauphin's Regiment (Cavalry).
1672 102nd Infantry Regiment (United States) Connecticut Connecticut United States Connecticut Connecticut United States Part of the Connecticut National Guard
1672 192nd Military Police Battalion Connecticut Connecticut United States Connecticut Connecticut United States Part of the Connecticut National Guard
1673 113th Infantry Regiment (United States) New Jersey New Jersey United States New Jersey New Jersey United States Taken in Service in 1775; traces orgians back to 1673 Militia; part of the New Jersey National Guard
1648 1st Danish Artillery Battalion  Denmark  Denmark Current formation from 2014; traces origins back to 1648
1685 Henry Cornewall's Regiment of Foot England England United Kingdom United Kingdom In 1751 numbered 9th Regiment of Foot; in 1881 Norfolk Regiment; in 1935 the Royal Norfolk Regiment; now A Company/1st Battalion "Royal Norfolks" of the Royal Anglian Regiment
1685 3rd The King's Own Hussars England England United Kingdom United Kingdom Now part of the Queen's Royal Hussars
1688 Dillon's Regiment Theobald Dillon, 7th Viscount Dillon Kingdom of France France France France In 1791 became part of the 87e régiment d'infanterie; one battalion renumbered as 157th régiment d'infanterie [dissolved 1961]; second battalion renumbered as 158th régiment d'infanterie [dissolved 1966]
1707 3rd Cavalry Regiment, Dragões de Olivença (Portugal) Portugal Kingdom of Portugal Portugal Portugal Created under the designation of "Regimento de Cavalaria Ligeira de Olivença"
1709 6th Cavalry Regiment, Dragões D'Entre Douro e Minho (Portugal) Portugal Kingdom of Portugal Portugal Portugal Created under the designation of "Regimento de Dragões de Trás-os-Montes"
1709 8th Cavalry Regiment "Lusitania" Jaime Miguel de Guzmán de Avalos y Spinola Crown of Castile, Spanish Empire Spain Marines, Valencian Community, Spain It was created as "10th Regiment of Dragons" on December 18, 1709. Nowadays is a light armoured cavalry unit in the Spanish Army.
1716 Royal Artillery United KingdomUnited Kingdom United Kingdom United Kingdom
1716 Royal Engineers United KingdomUnited Kingdom United Kingdom United Kingdom
1720 1st Parachute Hussar Regiment Ladislas Ignace de Bercheny Kingdom of Hungary Kingdom of Hungary France France It is an airborne cavalry unit in the French Army, founded in 1720 by Hungarian noble Ladislas Ignace de Bercheny.
1736 Georgia Hussars James Oglethorpe Georgia Colony State of Georgia Part of the 1st Squadron, 108th Cavalry Regiment, Georgia National Guard
1741 Artillery Company of Newport King George II Colony of Rhode Island Rhode Island State of Rhode Island An independent chartered command of the Rhode Island Militia.
1751 Punjab Regiment East India Company Madras  Pakistan Pakistan Oldest regiment in subcontinent region.
1756 169th Military Police Company King George II Colony of Rhode Island Rhode Island State of Rhode Island An active unit of the Rhode Island National Guard with deployments to Iraq and Afghanistan.
1756 The Queen's York Rangers (1st American Regiment) (RCAC) Robert Rogers United Kingdom British America Canada York, Canada Founded as Rogers Rangers
1764 66th Infantry Regiment "América" Charles III of Spain Viceroyalty of New Spain, Spanish Empire SpainBerrioplano, Navarre, Spain It was first deployed in the Presidios of the north frontiers of New Spain, in territory of the present United States of America. Nowadays is stationed in Navarre, Spain.
1768 Royal Nepalese Army King Prithvi Narayan Shah Gorkha Kingdom Kingdom of Nepal Nepal unification campaign was a turning point in the history of the Nepalese army.,
1775 Company A, 1st Battalion 69th Infantry Regiment (New York) New York (state) New York City, United States United States New York City, United States Descended from the 8th Company 1st New York Regiment 1775-1777; Part of the New York National Guard
1776 1st Battalion 5th Field Artillery Regiment United States United States United States US Army regulars
1782 65e régiment d'infanterie Kingdom of France France France France
1789 1st Battalion, 258th Field Artillery (United States) New York (state) New York United States New York (state) New York United States Part of the New York National Guard
1794 152e régiment d'infanterie France France France France
1798 Baloch Regiment East India Company Masulipatam  Pakistan Pakistan

See also

References

Notes

    Citations

    1. "Régiments de Picardie et du Colonel Général" (PDF).
    2. "Spotlight on the Swiss Guard". news.va. Retrieved 8 February 2015.
    3. VILLATORO, MANUEL P. "El regimiento más antiguo de Europa empezó siendo un tercio español y combatió contra Napoleón". ABC.es. Retrieved 2016-01-28.
    4. Tierra, JEME - Ejercito de. ".:Ejército de tierra:". www.ejercito.mde.es. Retrieved 2016-01-28.
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