PC Gamer interview.

[Sokol1]

This P-38 history is Martin Caiden fiction, the real Itlian P-38:

"On June 12, 1943, a USAAF P-38G, while on a flight from Gibraltar to Malta, suffered compass problems and landed by mistake at Capoterra, Sardinia. The Lightning was painted in Italian markings, and transferred to the Italian Test Center at Guidonia. On August 11, 1943, chief test pilot Col. Angelo Tondi used the P-38 to intercept USAAF bombers on their way to attack targets in central Italy. Tondi shot down a B-17F, "Bonnie Sue", of the 419th BS, 301st BG. This was the only successful interception achieved by the P-38G, which was soon grounded due to the poor quality of Italian gasoline, which corroded the fuel tanks. I believe that this is the only documented example of a captured US fighter being used to shoot down a US aircraft during WW2."

Sokol1