1st Patricians' Infantry Regiment

The 1st Infantry Regiment "Los Patricios" (Regimiento de Infantería 1 "Los Patricios") is the oldest and one of the most prestigious regiments of the Argentine Army. The title is often shortened to the Patricians' Regiment (Regimiento de Patricios). Since the 1990s the regiment has been designated as air assault infantry. It is also the custodian of the Buenos Aires Cabildo, the welcoming party for visiting foreign dignitaries to Argentina and the escort and honor guard battalion for the City Government of Buenos Aires. Since 22 September 2010, the Regiment's headquarters building has been a National Historical Monument following a declaration by the Argentine government on the occasion of the country's bicentennial year.

The regiment was formed as the Legión Patricia ("Patricians' Legion) from inhabitants of Buenos Aires in 1806 to fight against the British invasions of the Río de la Plata. Among some of its first members it included a woman, the Alférez (approximately, second lieutenant) Manuela Pedraza, one of the heroes of the Defense of Buenos Aires in 1806. The regiment therefore existed prior to Argentine independence. Their first commander was Cornelio Saavedra. The regiment also fought in the May Revolution, the Cisplatine War, the Platine War, the Paraguayan War, the Dirty War, and the Falklands War.

Although the word "Patrician" is usually employed as a synonym for , in the naming of the Regiment it meant "the sons of the homeland" (Spanish "Patria" meaning "homeland"). Indeed, the original members of the Regiment were not aristocrats but Criollos, who were much farther down in the social hierarchy of the time.

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