This is the last set of Spanish cavalry standards recreated by me earlier this year for Lewis Simpson-Jones.
Carabineros Reales first raised 1732 from the carabinier units of various line cavalry regiments. It had precedence over all cavalry units except for the Reales Guardias de Corpas. Consisted of 4 squadrons each of 3 companies.
Service:
1733-1735: War of the Polish Succession; in Italy and fought at the battle of Bitonto 1734
1740-1748: War of the Austrian Succession: In Italy; 1743 battle of Campo Santo; August 1745 the forcing of the passage of the Tanaro River
SYW: No information
[Details from Kronoskaf]
And this was the uniform in 1737; by the SYW it was little different:
[From NYPL: https://digitalcollections.nypl.org/items/510d47d9-99a8-a3d9-e040-e00a18064a99 ]