The Caballerizo major (Great Equerry) was the Officer of the Royal Household and Heritage of the Crown of Spain in charge of the trips, the mews and the hunt of the King of Spain.
The Office of “Caballerizo mayor” was one of the main Offices of the Royal Household in charge of the Royal Stables and everything related to the transportation of the Monarch. When the King sorted out from the Royal Palace, the Caballerizo had the main position behind him and the major rang over the other Court Officials. He managed as well the stables, the carriages and the horses. He was assisted by the “Primeros Caballerizos” (First Equerries) who were nominated by him.
He was in charge of the Royal hunt as “Montero mayor” (Great Hunter) holding, in many cases, the “Alcaldias” (Majorships) of the Spanish royal sites.
During the reigns of the last two Kings before the proclamation of the Second Spanish Republic, Alfonso XII and Alfonso XIII, the “Caballerizo”, which joined to his function that of the “Montero mayor” (Great Hunter) of the King (which was an Office created during the reign of Isabella II), was the second person in category after the Mayordomo mayor having the sole authority so soon the Monarch left the Royal Palace. Only a peer that had the rank of Grandee of Spain could be nominated for this Office. His annual wages were 15.000 pesetas, the same ones that had the “Mayordomo” and, equally, he had the right to a private office at the Royal Palace of Madrid.
Under his command they were the "Primer Caballerizo" (First Equerry) and the "Primer Montero" (First Hunter) with wages, both, of 7.500 pesetas per year. Under them they were situated the "Caballerizos de campo" (Equerries), who, usually, were officers of the Army.
The “Caballerizo” accompanied the King in all his trips or, as it was called, "days" and sat close to him in every carriage, in car or in the trips by train or by ship throughout Spain or foreign countries.