Italo De Bernardinis was from Occimiano (Alessandria).

Sergente De Bernardinis served as a volunteer in the 26^a Squadriglia during the Spanish Civil War.

Sergente De Bernardinis was decorated with his first Medaglia d’argento al valor militare (gazetted in 1938) for his actions over Spain between February and March 1937:

"Volunteer for a war mission fought for a supreme ideal, he faced the most challenging tests with boldness, consistently demonstrating a calm disregard for danger and great valour."
Sky of Spain, February-March 1937-XV.

Between 16:00-17:15 on 4 June 1937 on the Northern Front, ten CR.32s from 26^a Squadriglia, led by Capitano Mario Viola flying between Amorebieta and the Murguia front at 5 000 meters altitude, clashed with 17 I-15s between the Republican Escuadrilla Baquedano’s two bases (San Juan de Somorrostro and Sondica). Italian pilots claimed to have shot down seven “Curtiss fighters” in the Sondica area without loss, Capitano Viola being credited with two individual victories, Sergente Maggiore Guido Presel one Sergente Maggiore Guido Pongiluppi (CR.32 NC.128) one, Sergente De Bernardinis one, Sergente Maggiore Aldo Galadini one and Giannoti one.
Although both sides drastically overestimated their claims, Spanish I-15 pilot Marcelino Alonso Romero from Escuadrilla Baquedano did indeed lose his life during this encounter.

Sergente De Bernardinis was decorated with his second Medaglia d’argento al valor militare (gazetted in 1938) for his actions over Spain between May and June 1937:

"Volunteer in a war mission for the affirmation of the fascist ideal, he participated in over 50 war actions on the Bilbao front, including a difficult battle against overwhelming enemy forces, where he downed an aircraft, once again demonstrating outstanding combat qualities."
Skies of Saudica and Bilbao, May-June 1937-XV.

This was followed by the Medaglia di bronzo al valor militare (gazetted in 1940) for his actions between July and December 1937:

"Brilliant fighter pilot, repeatedly distinguished in previous battles, he gave full confirmation of his fine qualities as an aggressive hunter and valiant fighter in many other war actions and in seven battles, during which he downed four enemy aircraft."
Skies of Spain, July-December 1937-XVI.

De Bernardinis ended the war with 1 biplane victory.

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1937
1	04/06/37	16:00-17:15	1	I-15 (a)	Destroyed	Fiat CR.32		Sondica area	26a Squadriglia

Biplane victories: 1 destroyed.
TOTAL: 1 destroyed.
(a) 26^a Squadriglia claimed 7 I-15s without losses but only 1 can be verified (pilot KiA).

Sources:
Aerial War in Spain: Chronicle of air battle 1936-1939 – Sergey Abrosov, 2008
Elenco Nominativo dei Militari dell’ A. M. Decorati al V. M. Durante it Periodo 1929 - 1945 2 Volume M - Z
Guido Pongiluppi: Pilota Mantovano, Dal Cielo Di Campoformido A Quelli Di Spagna E Malta - Renato Zavattini and Antonio Inguscio, 2021 IBN Instituto Bibliografico Napoleone, ISBN 9788875655389