The judgement of Carlos III turned out to be perspicacious and sound as, a generation after his death, 12,000 Spanish with some English and Portuguese held Cadiz against a French force of 70,000 under Napoleon in the Siege of Cádiz. All the rest of the country had fallen. When the French were gone, the savants who had congregated at Cadiz suggested a Constitution for a limited monarchy, but it was rejected by the monarch. San Carlos, however, entered a new ascendance in the structure of the military. It became the seat of the Spanish Naval Academy and the headquarters of the Spanish marines, with the Pantheon in a new role as chapel. In 1943 the Naval Academy moved to Pontevedra. The role of San Carlos after 1943 seemed to decline. San Fernando has been lobbying to take over its lands for commercial development, a goose laying a golden egg for some interests, as former bases are in many countries, especially the United States.