I remember that I found a prince of Schwarzenberg as a General of the Dutch army in 1745. But during the last weeks I could only find a baron Sicco of Schwarzenberg (sometimes "Schwartzenberg"), who later became general of the infantry. He maybe had an important role in the WAS as general lieutenant. Perhaps it was a mistaking - somebody found the prinicipal house of Schwarzenberg (located in Franconia) only.
Very interesting what you can learn by Research. I was - for example - highly confused about the Name Hildburghausen. I read this Name on both sides and so I did not knew who fought who. Now I know that there were two Princes of Sachsen-Hildburghausen in this war. One of them was the very brave and famous commander of the imperial army at Rossbach: Joseph Friedrich von Sachsen-Hildburghausen (1702-1787). He had a regiment of infantry in the austrian army (IR 8) for more than 50 years (!). The second Hildburghausen was Ludwig Friedrich von Sachsen-Hildburghausen (1710-1759). He had a Regiment of infantry too, but in the enemies army - in the bavarian. Later both fought on the same side, when the elector of Bavaria send a Corps under the command of the younger Hildburghausen to Flanders. Joseph Friedrich was the uncle of Ludwig Friedrich. It seams that the two Hildburghausens never fought realy against each other cause the older Hildburghausen was mostly in administration services in the 1740s.
Yesterday I found more Details about the relationship of both Hildburghausen-Generals.
First the younger Ludwig Friedrich von Sachsen-Hildburghausen, who was a son of the Dutch General Major Ernst von Sachsen-Hildburghausen, who was the "Inhaber" and Colonel of the Regiment "Saxe-Heilburg" (the strange name was chosen because the Dutch and French could not speak out "Hildburghausen" - but the name stood in for Sachsen-Hildburghausen), served in the Austrian army. Ludwig Friedrich had to join the Austrian army, as the regiment of his father was disbanded in 1723 due to the massive reduction of the Dutch army after the war. The young Ludwig Friedrich was patronized by his uncle Joseph Friedrich. Later Ludwig Friedrich suffered under the pressure of his creditors. Finally his uncle canceled to help him.
Ludwig Friedrich abandoned the Austrian army and joined the Bavarian army to escape his creditors. I have the Impression that Ludwig Friedrich never could distinguish himself during the war. After the treaty of Füssen he was still in the Bavarian army and shared the destiny of many Bavarian troops to march to the Low Countries. There he hoped to leave the Bavarian service and join the Dutch army, although he was the commander in chief of all Bavarian troops in Flanders(!). But the Dutch statesmen like Bentinck assumed that Ludwig Friedrich was just one more German prince, who had no Money and wanted only to serve for Money and would not be valuable at all. In 1747 Ludwig Friedrich fought in the front line during the siege of Bergen-op-Zoom.
After the war Ludwig Friedrich left the Bavarian army and returned to Sachsen-Hildburghausen due to bad health. His relations to the Bavarian elector got worse. But to rejoin the Austrian army was no Option because he had fought against the Austrians during the War of the Austrian Succession. Finally in 1749 he had success (reminding the Service of his father) in his endeavours to get command in Dutch Service. He became the Gouverneur of Nijmegen and was burried there in 1759, now wealthy and respected*.
* Dr. Oliver Heyn: "Militärisches Prestige und finanzielle Absicherung. Die Herzöge von Sachsen-Hildburghausen im Dienst der Vereinigten Niederlande (1680-1760)" Verlagsdruckerei Schmidt, Jena, 2017, p.68-72
Es marschierten drei Regimenter wohl über den Rhein...
just to show that the bad pennies never disappear, they just lurk on the forums - Visiting this theme, in the French army any command of brigade or higher was actually an appointment decided upon by the army commander at the outset of the campaign.
How it seems to have worked is that as his career progressed an officer would eventually be appointed brigadier (not the same rank as in cavalry regiments), and would effectively form part of a 'pool' of officers similarly appointed (note appointed not promoted).
When a senior officer was appointed to an army command he would then take the list of such officers available within his army and make such appointments as experience or nepotism would allow - As an example it would appear that all of the brigadiers of the Army of the Rhine in 1743 were appointed by Marshal Noailles 'par lettre' on the 1st April 1743. Such letters (or the memoirs of the individual) would be the key to finding the brigade structure
This would mean that the Brigade du Roi Infanterie would not necessarily be commanded by its' senior colonel but that that colonel could serve under another officer. In cases where the colonel was the King or another exceptionally high personage his place was taken by the Colonel-Lieutenant and not the Lieutenant-Colonel. It would also appear that in multi battalin regiments Batt#1 had the Lieutenant Colonel and the remainder had "Commandants de Bataillon".