FIG.1. Veteran Dragoon Officer.
Bicorne black with red plume and cockade, gold lade along edge, tassels and cockade holding strap with gilt button. Tunic yellow ochre, red collar, turnbacks and lapel edging, collar lace gold, lapels yellow ochre, cuffs as for collar, gilt buttons, waistcoat and breeches white, black boots, gauntlets of buff leather, sword cord strap red, sword knot of gold lace.

FIG.2. Legion of Sobremonte Officer.
Top hat black, red plume with red cockade at its base, yellow lace band, tunic brown with red collar, yellow ochre cuffs, lapels and turnbacks piped red, buttons gilt, waistcoat and breeches brown, black boots, white sword knot.

FIG.3. Shabraque.
Blue with yellow/gold edge, pistol holsters and valise the same, yellow/gold tassel.

Source
National Archives, Buenos Aires.