 Guido was at the Guayaquil Conference where the two great Liberators of South America (San Martín and Simón Bolívar) met for the only time.After San Martín left Peru, Guido stayed on, earning the titles of Supreme Military Advisor in 1823 and later Brigadier General.In 1826 Guido returned to Buenos Aires where he was appointed as Inspector of Arms in 1827 by Bernardino Rivadavia.