Colonel Francis Carroll's Regiment of Dragoons had a colonel, lieutenant-colonel, major, nine captains, eleven lieutenants, eleven cornets, ten quarter-masters, and an adjutant. There were ten companies and 353 men (Avaux). This regiment was formerly Colonel Thomas Trant's, formerly Sir James Cotter's.
Before Colonel Francis Carroll commanded a regiment he had been lieutenant-colonel of Lord Dungan's Dragoons. He attacked Enniskeen, but was driven off by Colonel Ogleby (Story, p. 65). After 1691 he went to France and became major-general, and he and Lieutenant-General Thomas Maxwell were each placed in command of a regiment of dismounted dragoons; Maxwell's was the Royal Regiment and Carroll's the Queen's. Each of these numbered 558 officers and men. At Marsaglia both officers were killed. ‘Ces deux régiments de dragons,’ wrote Catiuat, ‘qui étaient dans le centre de la ligne, ont fait des choses surprenantes de valeur et de bon ordre dans le combat. Ils ont renversé des escadrons l'épée à la main, les chargeant tête par tête.’