Ennio Grifoni was born in Firenze on 14 January 1917.

On 20 December 1940, Tenente Arnoldo Laurenzi, Tenente Camillo Luglio, Sottotenente Orlando Mandolini (from the 93^a Squadriglia, 8^o Gruppo) and Sottotenente Ennio Grifoni were assigned to the 91^a Squadriglia, 10^o Gruppo.
This unit was at the time equipped with Fiat CR.42s and operated in North Africa

The last Italian bombing mission of the day on 27 December was again against Sollum. Four SM 79s from the 41^o Stormo under Tenente Colonnello D’Ippolito and four bombers from the 216^a Squadriglia, 34^o Stormo, led by Tenente Romanini took off from Tmini at 14:30.
They were escorted by fighters from the 23^o Gruppo and 10^o Gruppi. Maggiore Tito Falconi was at the head of the formation of the first unit, which also included Tenente Claudio Solaro, Sottotenente Oscar Abello and Sergente Ubaldo Marziali from the 70^a Squadriglia, Tenente Mario Pinna, Sottotenente Milano Pausi and Sergente Giuseppe Sanguettoli from the 74^a Squadriglia and Tenente Pietro Calistri, Tenente Ezio Maria Monti, Maresciallo Giovanni Carmello, Sergente Leo Mannucci and Sottotenente Leopoldo Marangoni from the 75^a Squadriglia.
It seems that the bomber formation split and the 41^o Stormo attacked British mechanized units in Halfaya and Gabr Bu Fares under heavy AA that damaged, although slightly, all the aircraft. The SM 79s of the 34^o Stormo attacked ships in Sollum harbour and were intercepted by many Hurricanes. The SM 79s were totally unable to defend themselves because of icing on all the guns and one of them was shot down. This was Sottotenente Aldo Peterlini’s bomber and Peterlini was killed together with three of his crew (Sergente Maggiore Arturo Scagnetti (second pilot), Aviere Scelto Motorista Alcide Frizzera and Aviere Scelto Radiotelegrafista Gioacchino Scuderi). The other two members of the crew (Primo Aviere Armiere Ciancilla and Primo Aviere Montatore Fiore) where able to bale out. Tenente Pandolfi’s aircraft was riddled by enemy bullets (probably RD) while the other two SM 79s were less seriously damaged although suffering some wounded among their crews.
They had been intercepted by 33 Squadron which claimed three SM 79s and one probable and probably two CR.42s during offensive patrols performed by pairs of Hurricanes over Sollum. They also claimed one SM 79 and one CR.42 damaged. Vernon Woodward claimed one of the probable CR.42s and the damaged CR.42.
Falconi’s pilots recorded combat with many Hurricanes, one of which was claimed as probable by the 70^a Squadriglia and six more were damaged. Tenente Solaro and Sottotenente Abello returned with damaged fighters. Solaro had been hit by AA fire and Sottotenente Abello by British fighters. Calistri and his men claimed a shared Hurricane and four more damaged. They landed back at 16:55. A shot down Hurricane was also recorded by the 74^a Squadriglia, which also recorded a SM 79 shot down by AA fire.
The CR.42 escort from the 10^o Gruppo was composed of seven fighters from the 90^a Squadriglia (Tenente Giovanni Guiducci, Tenente Franco Lucchini, Sottotenente Alessandro Rusconi, Sottotenente Neri De Benedetti, Sergente Alfredo Sclavo, Sergente Bruno Bortoletti and Sergente Enrico Botti), six from the 84^a Squadriglia (Capitano Luigi Monti, Tenente Antonio Angeloni, Sottotenente Bruno Devoto, Sergente Maggiore Salvatore Mechelli, Sergente Domenico Santonocito and Sergente Piero Buttazzi) and six from the 91^a Squadriglia (Maggiore Carlo Romagnoli, Capitano Vincenzo Vanni, Sottotenente Andrea Dalla Pasqua, Sottotenente Orlando Mandolini, Sottotenente Grifoni and Sergente Elio Miotto). Tenente Guiducci reported that the heavy AA immediately hit one of the SM 79s, which was shot down. Then five monoplanes (Hurricanes and Spitfires(!)) tried to attack but were immediately counterattacked and one of them was shot down. Later, another attempt by a lone British fighter failed after the intervention of the Italian escort. The 90^a Squadriglia pilots expanded 320 rounds of ammunition and it seems that in the end the victory was assigned to the whole formation as a Gruppo victory. It seems that it was the same aircraft claimed independently by the two Squadriglie of the 23^o Gruppo.

On 4 January 1941, Hurricane Mk.Is of 33 and 274 Squadrons patrolled the battle area during the British push towards Tobruk in Cirenaica. A pilot from 33 Squadron claimed a CR.42 over Bardia-Tobruk, Pilot Officer Grenfell “Stan” Godden (V7558) of 274 Squadron claimed two more 8km north of Great Gambut at 07:15-10:25 and Flight Sergeant T. C. “Tom” Morris also of 274 Squadron claimed a fourth over Great Gambut (take-off 11:50). Morris’ aircraft (V7293) was however hit in the radiator and he made a forced-landing. Flying Officer T. L. Patterson (P2643) was also hit and obliged to force-land.
These actions had been fought against S.79-escorting CR.42s of 10^o and 23^o Gruppi. The Italian pilots returned reporting that they had attacked a large British formation and claiming two Hurricanes and a probable Blenheim. One Hurricane was claimed by Tenente Colonnello Carlo Romagnoli (CO 10^o Gruppo) and the other by Maresciallo Leonardo Ferrulli. Tenente Claudio Solaro (CO 70^a Squadriglia), returned claiming the probable Blenheim.
The Italians lost three aircraft, Sottotenente Grifoni (91^a Squadriglia) was KiA when he was shot down in flames, Sottotenente Bruno Devoto force-landed at Tobruk’s T5 landing ground and Tenente Gino Battaggion (70^a Squadriglia) was wounded and force-landed at Ain el-Gazala. Battaggion, who had been escorting S.79s bombing armoured cars in the Bardia area, recalled:

”At 5,500 meters I saw two Hurricanes in front of me. I began shooting. They shot at me too. Suddenly, I felt a hit. An explosive bullet broke the windshield into many pieces and I was slightly wounded in the head. The explosion broke my goggles and wounded me in one eye. With blood oozing down my face, I lost consciousness for some seconds, perhaps ten or twenty. I recovered consciousness due to the air rushing into the cockpit and found that the aircraft was spinning. I managed to recover from the spin and when I was near the ground fired a burst at some trucks. My wingman signalled to me that one wheel of my aircraft was damaged but I managed to land at Ain el-Gazala, near an ambulance. I landed at the slowest speed possible, holding the weight of the aircraft on the one serviceable wheel, and succeeded in stopping without overturning. The personnel near the ambulance recovered me and for about three months I could not fly because the eye gave me a lot of trouble. Some splinters had been extracted from my head – some of them are still there.”

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

Claims:

Kill no.	Date	Time	Number	Type	Result	Plane type	Serial no.	Locality	Unit
	1940
	27/12/40	14:30-	1/19	Hurricane (a)	Shared destroyed	Fiat CR.42		Sollum area	91a Squadriglia

Biplane victories: 1 shared destroyed.
TOTAL: 1 shared destroyed.
(a) Claimed in combat with Hurricanes from 33 Squadron, which claimed two probable CR.42s and one damaged without losses. The 10^o and 23^o Gruppi claimed 3 Hurricanes and 1 probably shot down with another 10 damaged while suffering 3 damaged CR.42s.

Sources:
2^o Stormo - Note storiche dal 1925 al 1975 - Gino Strada, 1975 USSMA, Rome, kindly provided by Ludovico Slongo
Desert Prelude: Early clashes June-November 1940 - Håkan Gustavsson and Ludovico Slongo, 2010 MMP books, ISBN 978-83-89450-52-4
Desert Prelude: Operation Compass - Håkan Gustavsson and Ludovico Slongo, 2011 MMP books, ISBN 978-83-61421-18-4
Elenco Nominativo dei Militari dell’ A. M. Decorati al V. M. Durante it Periodo 1929 - 1945 1 Volume A - L
Ministero della Difesa - Banca Dati sulle sepolture dei Caduti in Guerra
Quelli del Cavallino Rampante - Antonio Duma, 1981 Editore Dell'Ateneo, Roma kindly provided by Ludovico Slongo
Additional information kindly provided by Ludovico Slongo