Messerschmitt Bf 109Fs of a German fighter units parked on a Sicilian airfield, perhaps Catania, early 1942. The bottom yellow engine cowling suggest airplanes coming from the Balkan’s front still without the fuselage white band typical of the Luftwaffe’s aircraft committed on the Mediterranean Theatre Operational. The “109” in background has the crank for hand start. Two Italian aircraft are in the photo: on the right a Savoia-Marchetti S.79 bomber, on the left a Caproni Ca.100 “Caproncino” (Little Caproni) with civilian registration, likely of the local Aero Club. Victor Sierra

On a Sicilian airfield

One of the Bf 109 of the Luftwaffe’s JG53 “Pik-As” armed with under wings 20 mm cannon leave the dispersal, concealed under the trees on Italian mainland airfield, 1943. Victor Sierra

Leaving the dispersal

German personnel preparing for the flight, an American reconnaissance plane Lockheed F-5E Lightning s/n 44-23725 Lieutenant Martin James Monti deserted from the USAAF.On October 13, 1944 he landed his plane at Pomigliano Airfield near Milan in Italy, The Italians had captured the aircraft and handed it over to the Germans.

Source Wiki:
Martin James Monti (October 24, 1921 – September 11, 2000) was a United States airman who defected to the Axis powers and worked as a propaganda broadcaster and writer. After the end of World War II, he was caught and sentenced to long terms, first for desertion, then for treason.

Monti enlisted in the Army Air Forces as an aviation cadet. He reported for training and later was commissioned as a flight officer. He subsequently qualified in the P-39 Aircobra and the P-38 Lightning, and was promoted to second lieutenant, when he was sent to Karachi, India (now in Pakistan). Attached to the 126th Replacement Depot, by then a first lieutenant, he deserted the Army Air Forces. He hitched a ride aboard a C-46 to Cairo, Egypt, and from there he traveled to Italy, via Tripoli, Libya. At Foggia he visited the 82nd Fighter Group, and then he made his way to Pomigliano Airfield, north of Naples, where the 354th Air Service Squadron prepared aircraft for assignment to line squadrons. He took note that an aircraft, a reconnaissance version of the P-38 Lightning, needed work and required a test flight after repairs. He stole the aircraft and flew to Milan. There, he surrendered, or rather defected to the Nazis, and subsequently began work as a propaganda broadcaster under the pseudonym of "Captain Martin Wiethaupt".

At the end of 1944, Monti made a microphone test at the recording studio of the SS Standarte ‘Kurt Eggers’, a propaganda unit of the Waffen-SS, under the direction of Guenter d'Alquen, in Berlin, Germany. He later joined them as a SS-Untersturmführer and participated in writing and composing a leaflet to be distributed by members of the German military forces, and among Allied prisoners of war.

At the end of the war, Monti was in Italy when he surrendered to the Americans (still wearing his SS uniform). In 1946, he was sentenced to 15 years in prison on the charge of desertion, but was pardoned within a year on condition he join the army. He was serving as a sergeant when the FBI rearrested him in 1948. He was charged with treason, as his propaganda activities as "Martin Wiethaupt" had been discovered by the FBI, and sentenced to 25 years in prison. Monti was paroled in 1960.