The 1st Infantry Regiment "Patricios" (Regimiento de Infantería 1 "Patricios") is 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.

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 Argentina-Brazil War, the Battle of Caseros, the War of the Triple Alliance, the Dirty War, and the Falklands War.

Conscript

Commissioned officer

A Patricios Regiment detachment