Until about 1808 the upper ranks of the Walloon Guards had to provide evidence of their aristocratic lineage and private incomes.

[5] In March 1766, the Walloon Guard was amongst the troops defending Charles III of Spain during the Esquilache Riots, and shots fired by a detachment of the regiment killed a woman, intensifying the crowd's anger.

Four battalions of Walloon Guards garrisoned in Barcelona and Aragon continued in Spanish service, seeing much action against the French.

With recruitment from the Southern Netherlands effectively ceasing, the Walloon Guards were reduced in numbers to two battalions by January 1812, in spite of drawing on Spanish volunteers as replacements.

[11] This article incorporates material from the es:Diccionario Enciclopédico Hispano-Americano registered in 1892, nowadays in public domain