<page_title> List of oldest military units and formations in continuous operation </page_title> <section_title> Oldest active military units still in operation </section_title> <table> <cell> 1st Infantry Regiment <col_header> Name </col_header> </cell> <cell> 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. <col_header> Notes </col_header> </cell> </table>
The 1st Infantry Regiment was founded in 1479 and is one of the oldest regiments in active service in the world.