List of oldest military units and formations in continuous operation
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While modern standing armies were first developed in the 15th century, the defining terminology for contemporary military units and formations, such as company,
battalion A battalion is a military unit, typically consisting of 300 to 1,200 soldiers commanded by a lieutenant colonel, and subdivided into a number of companies (usually each commanded by a major or a captain). In some countries, battalions a ...
,
regiment A regiment is a military unit. Its role and size varies markedly, depending on the country, service and/or a specialisation. In Medieval Europe, the term "regiment" denoted any large body of front-line soldiers, recruited or conscript ...
etc. mostly arose in the early modern period, during the 16th and 17th centuries. Only units that are still extant are included, while contemporary refoundings of older units are excluded.


Oldest active military units still in operation


See also

*
List of armies {{short description, None Lists of armies include: * List of armies by country * List of numbered armies * List of formations of the United States Army * List of British armies in World War I * List of French armies in World War I * List of Rus ...
* List of oldest institutions in continuous operation *
Army National Guard and Active Regular Army Units with Colonial Roots Thirty federally recognized units in the U.S. Army have lineages that go back to the colonial era. Twenty-nine are National Guard units (regiments, battalions, companies, batteries or troops); one is a Regular Army Field Artillery battalion. O ...
(US Army only)


References

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