1752, August 21 - The regiment of Swiss mercenaries stationed at Louisiana was commanded by comte d'Hallwyl, who had been serving in that capacity since August 21, 1752.
1760, January 25 - Hallwyl was promoted to brevet brigadier, a rank which he apparently retained until the Swiss regiment's dissolution in 1763. (Commission as colonel of Karrer's Swiss Regiment for Hallwyl, August 21, 1752) (A COMPARATIVE VIEW OF FRENCH LOUISIANA 1699 AND 1762 p.91).
1763, June 1 - A Royal ordinance disbanded Hallwyl's regiment (A COMPARATIVE VIEW OF FRENCH LOUISIANA 1699 AND 1762 p.91).
An interesting marriage was Marie Ursule De Karrer de Landser to Jean Volant. They were the parents of Jean "Gregoire" Volant, born in 1707 in Province of Savoy, Switzerland. Marie Ursule was from Diocese of Strasbourg (Karrer) in upper Alsace. Jean Volant was "master of waters and forests" (a government post in France).
Jean "Gregorie" Volant was a Commandant of the fourth company of the Swiss Regiment of Karrer, and Knight of the Royal and Military Order of St Louis. Louis Billouart de Kerlerec considered him a man of integrity.
In 1723 he began service as a cadet in Karrer's regiment. (LOVE'S LEGACY).
In 1736 he married Marthe Chauvin, daughter of Jacques Chauvin dit Mondon and Marie Anne LaVergne.
1747 - He was commissioned as captain and given command of the Fourth Company of Karrer's Swiss Regiment. He was also identified as an engineer (LOVE'S LEGACY).
1748 - He moved from Mobile to New Orleans and became a planter, living on a six arpent plantation.
1750's - He sold his six arpent plantation and acquired a 14 arpent plantation downriver where he raised cattle.
abt 1750 - He became the subrogate tutor of the children of Jacques Chauvin Jr., son of Jacques Sr and Marie Anne La Vergne.
1753 - By 1753 he was the Captain-Commandant of the Swiss Troops in Louisiana. Grondel, a Captain, was a subordinate officer.
1753 - 1759 - Look for Royal French land grants MSS No. 29, Howard Tilton Library. (SLV)
1754 - Kerlerec presented him, along with his subordinate officer, Jean Philippe Goujon de Grondel, the Cross of the Royal and Military Order of St. Louis.