Royal Regiment (France)
The Régiment Royal was a French Army regiment that had been enlarged by renaming and uniting older regiments. At the time, the régiment de l'Altesse and the régiment Royal became one. The regiment Royal was first started 1656 by the Duke d'Arpajon. References

Military units and formations established in 1644
Military units and formations disestablished in 1791
Infantry regiments of the Ancien Régime