Along with two other young officers, Adhemar Saenz Lacueva and Esteban Cristi, they gained their military aviator rating in Argentina and Chile and formed the Military Aeronautical School on 20 November 1916. This school was the only military aviation facility in Uruguay until 1935. Several European aircraft types were used in fairly large numbers during the twenties, among them sixteen Avro 504Ks, thirteen Breguet 14s, five Castaibert 913-IVs, twenty-eight Nieuport 27s. These pioneering years saw many air routes opened and an overall increase in the awareness of the military potential of this nascent force.