Caro Fontes enlisted in the
Real Armada in 1733 and the following year he
purchased his commission as a lieutenant colonel of the Oran Dragoon Regiment, unit with which he saw action at the conquests of
Naples and
Sicily. He later saw action at the sieges of
Demonte (19 August 1744), and
Cuneo (13 September), as well as at the battle of
Madonna dell'Olmo and at the
Siege of Villafranca (1744). Returning to the Navy, he was appointed
frigate captain in 1745. In 1748, he transferred as a coronel to the Belgian Cavalry Regiment and the following year to the Sagunto Cavalry Regiment, unit with which he was garrisoned at
Guissona, in Catalonia. In 1755 he was appointed coronel of the Batavia Dragoon Regiment garrisoned at Palma de Mallorca and promoted to Cavalry brigadier in 1761. The regiment became the Almansa Dragoon Regiment in 1766 and the Marquis continued in command until being promoted to field marshal in 1770. ==Death==