On June 28, 1928 he participated in a mass flight carried out by six Ansaldo A.120 and six Fiat R.22 which under the leadership of General Italo Balbo went to the annual event that was held at the Hendon Aerodrome; after witnessing the annual military exercises held on that base, which simulated city bombing, dogfighting and colonial police operations, on the 30th of the same month the planes returned to Italy.

Shortly before the capitulation of France, on June 18, he was part of the Italian delegation (along with Minister of Foreign Affairs Galeazzo Ciano, Foreign Ministry official Gino Buti, Deputy Army Chief of Staff General Mario Roatta, and Rear Admiral Raffaele de Courten) that went to Munich to speak with Adolf Hitler to present the armistice requests that the Italian government intended to make to the French one.

On June 28 he witnessed the death of Marshal of the Air Force Italo Balbo, shot down over Tobruk in a friendly fire incident; Perino was travelling on the SM.

[3][4][5] Immediately after Balbo's death, Perino was tasked by the Chief of Staff of the Regia Aeronautica, General Francesco Pricolo, with preparing an extensive and detailed report on the incident.

Upon arrival of the latter, Perino was replaced in his role by General Fernando Silvestri; for his activities in North Africa he was awarded a Bronze Medal of Military Valor.