Ernesto Trevisi was born on 7 June 1919 in Novi Ligure.

After completing his studies at the Military College of Rome he enlisted in the Regia Aeronautica starting to attend, from 1937, the Regia Accademia Aeronautica di Caserta, Corso Sparviero.
He obtained his pilot’s license in September 1939, and was appointed student officer the following October.
He became a military pilot in May 1940 and was commissioned (in Servizio Permanente Effettivo) and promoted to Sottotenente in September 1940 before being assigned to the 53^o Stormo C.T. stationed on Caselle Torinese airport.

He served in the 363^a Squadriglia, 150^o Gruppo Autonomo C.T., equipped with Fiat CR.42s.
With this unit he left to fight in the Greek campaign. Arriving in Brindisi they continued to Tirana, Albania, and then reached the airfield of Coriza on 1 November.
In just ten days of combat, he performed 60 hours of flight time on strafing and escort missions.

In the early morning on 13 November, 84 Squadron's 'A' Flight attacked Valona and Argyrokastron. At the latter target, a Meridionali Ro.37 and a Caproni 311 were destroyed, while one CR.42 was damaged.
Sottotenente Trevisi and Sergente Mario Scagliarini attacked, each claiming one Blenheim shot down. In fact, only one suffered damage, and this made it back to Menidi.

In the afternoon on 14 November, while on a cover patrol over the airfields in the Koritza area, four CR.42s flown by Sottotenente Ugo Drago, Sottotenente Trevisi, Sergente Augusto Manetti and Sergente Vittorio Pirchio intercepted two P.Z.L. P.24s, but they were a trap, as ten more enemy fighters were waiting higher. In the ensuing dogfight Drago claimed two enemy biplanes shot down individually and three more shared with the other three pilots.
The Greeks shot down Trevisi, who was killed, and Manetti, who baled out over Italian held territory, while Pirchio's aircraft was badly shot-up and he was wounded in the left foot; his fighter overturned on landing.
Epismingos Theodoropoulos and his pilots from 23 Mira submitted claims for eight CR.42s during the day. A number of PZLs may have been damaged, and some possibly shot down but no Greek pilots were killed or wounded during this engagement.

Trevisi was subsequently awarded Italy's highest medal for valour, the Medaglia d'oro al valor militare 'alla memoria'.

At the time of his death, Trevisi was credited with 1 biplane victory.

Claims:

Kill no.	Date	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1940
1	13/11/40	1	Blenheim (a)	Destroyed	Fiat CR.42		Argyrokastron	363a Squadriglia
	14/11/40	1/4	PZL P.24 (b)	Shared destroyed	Fiat CR.42		Koritza area	363a Squadriglia
	14/11/40	1/4	PZL P.24 (b)	Shared destroyed	Fiat CR.42		Koritza area	363a Squadriglia
	14/11/40	1/4	PZL P.24 (b)	Shared destroyed	Fiat CR.42		Koritza area	363a Squadriglia

Biplane victories: 1 and 3 shared destroyed.
TOTAL: 1 and 3 shared destroyed.
(a) Claimed in combat with Blenheims from 'A' Flight of 84 Squadron. 160^o Gruppo Autonomo C.T. claimed two destroyed but in fact only one suffered damage, and this made it back to Menidi.
(b) Claimed in combat with PZL P.24s from 23 Mira. Italian fighters claimed eight P.24s over Koritza during the day while losing two aircraft and getting a third damaged. 23 Mira claimed eight CR.42s. A number of PZLs may have been damaged, and some possibly shot down but no Greek pilots were killed or wounded during this engagement.

Sources:
53^o Stormo - Marco Mattioli, 2010 Osprey Publishing, Oxford, ISBN 978-1-84603-977-5
Air war for Yugoslavia, Greece and Crete - Christopher Shores, Brian Cull and Nicola Malizia, 1987 Grub Street, London, ISBN 0-948817-07-0
Elenco Nominativo dei Militari dell' A. M. Decorati al V. M. Durante it Periodo 1929 - 1945 2 Volume M - Z
Fiat CR.42 Aces of World War 2 - Håkan Gustavsson and Ludovico Slongo, 2009 Osprey Publishing, Oxford, ISBN 978-1-84603-427-5
Ministero della Difesa