San Martín had been interviewed by the…
October 1812 CE
They had appointed him a lieutenant colonel of cavalry, and asked him to create a cavalry unit, as Buenos Aires did not have good cavalry.
He began to organize the Regiment of Mounted Grenadiers with Alvear and Zapiola.
As Buenos Aires lacked professional military leaders, San Martín had been entrusted with the protection of the whole city, but had kept focused on the task of building the military unit.
San Martín, Alvear and Zapiola have established a local branch of the Lodge of Rational Knights, along with morenists, the former supporters of the late Mariano Moreno.
This lodge seeks to promote liberal ideas; its secrecy hides whether it was a real Masonic lodge, or a lodge with political goals.
It has no ties to the Premier Grand Lodge of England.
San Martín has married María de los Remedios de Escalada, a fourteen-year-old girl from one of the local wealthy families.
The lodge organizes the Revolution of October 8, 1812, when the terms of office of the triumvirs Manuel de Sarratea and Feliciano Chiclana end.
Juan Martín de Pueyrredón promotes antimorenist new members, Manuel Obligado and Pedro Medrano, by preventing the vote of three deputies and thus achieving a majority.
As this causes a commotion, San Martín and Alvear intervene with their military force, and the Buenos Aires Cabildo disestablishes the triumvirate.
It is replaced by the Second Triumvirate of Juan José Paso, Nicolás Rodríguez Peña and Antonio Álvarez Jonte.
The new triumvirate calls the Assembly of the Year XIII and promotes San Martín to colonel.