Thank you Jean,

Very comprehensive and informative.

(Guy) Dempsey reports that a decree of 1813 disbanded the following:
1.Regiment de Prusse (4th Foreign)
2.Régiment d'illyria
3.Chasseurs Illyrens (and the related Provisional Croatian Regiments)
4. Hussards Croates
5. Régiment Joseph-Napoléon
6.Légion Portuguaise

Dempsey also reports that he had (at the time of writing) not seen the decree in full, merely extracts cited in various secondary sources.

Guy C. Dempsey, Napoleon’s Mercenaries: Foreign Units in the French Army Under the Consulate and Empre, 1799 to 1814 (Greenhill / Stackpole, 2002), pp. 24 et seq

Do you have a full reference for the work by Martinien please?

Best wishes
A