@ eboracomb:
stecal is right about "Catalonia stands alone". Moreover you can contact the author here as he is none other than Lluís from the Minairons miniatures manufacturing company. Also stecal was right on asking the Catalans; myself being Catalan, Lluís too; you'll get any help you ask for.
I'll put some links below:
link for the facings of units of the Catalan army.
link for examples of a fusilier, a musician and an officer.
link for an explanation on Miquelets
link for some pictures of Miquelets and their equipment
for an image based list of elements
alike, but coloured although elements are not pointed to (it's an exercise for kids I think)
The first links are from the main reeenacting group for the WSS in Catalonia which is the also the largest here (there's a Castilian group also very large but they don't have Miquelets). You'll see that Catalan regular infantry is very much alike Spanish or French in looks with their ventral cartridge box.
Miquelets are a whole different matter however.
There's the "xarpa": no translation to English; it's a Catalan word that designates a somewhat square piece of strong leather that serves as kind of a holster for putting pistols and daggers on it.
The calcilles are leather or canvas gaiters.
Espardenyes are sandals (the Spanish call them "alpargatas").
The trousers are long (or short) like breeches but are very baggy.
The camisola or jupa is a short (just below the waist, maybe a bit more) tight jacket.
The gambeto is like a frock coat, just as long as the regular infantry one but with much less voluminous skirts, more alike napoleonic ones in volume.
Last but not least their firearm was the escopeta catalana, which was a lighter, shorter version of a musket with no bayonet and a different looking butt, more curved. These weapons were made in Catalonia and Miquelets sported them while regulars had normal muskets, these surely being either British/Austrian or French/Spanish obviously but with the former predominating.
A Catalan Miquelet musician was called a "cornaire" (plural cornaires) and sounded a "corn" which was usually a huge sea snail shell. Its sound is awesome, it raises your hair if pleyed properly. Miquelets sounded them when the enemy had surpassed their positions to spring an ambush. Whem regular infantry/cavalry convoys went by the twisted paths through wooded hills of Catalonia, the sound of these corns being heard behind them and then being answered in front of them and all around must have been terrifying. FYI the numbers of casualties in Miquelet actions was very disproportionated favouring Miquelets. Even grenadier columns surrendered to them.
Hope to have helped a bit. I was a reenactor in the aforementioned Catalan group (playing sergeant major) and know personally a bunch of Miquelet reenactors and the people whise invaluable investigations have unearthed all that information on the WSS Catalan army.
Catalan units did play a role in Charles peninsular army, his own corps guards being a full Catalan battalion, but after Utrecht and Charles' and Elisabet's exit in summer 1713 the Catalan Generalitat assumed control, raising and equipment of its own, Catalan, army. There was a Generalitat regiment (king of guard) paid for by the institution, the rest of units being raised and paid in the usual manner in those times, by resourceful enough individuals.