In September 1942, the Eagle squadron pilots transferred to the USAAF, becoming the nucleus of the 4th Fighter Group. Gentile became a flight leader in September 1943, now flying the
P-47 Thunderbolt. Having flown Spitfires, Gentile and some of the other pilots of the 4th were displeased when they transitioned to the heavy P-47C in April 1943. On 16 December 1943, Gentile claimed one third-share of a destroyed Ju 88. On 5 January 1944, he claimed a
Fw 190 west of
Tours. Two Fw 190s were claimed on 14 January and a single 190 on 25 February. By late 1943, future Group Commander Col.
Don Blakeslee pushed for re-equipment with the lighter, more maneuverable
P-51 Mustang. After conversion to the P-51B at the end of February 1944, Gentile built a tally of 15.5 additional aircraft destroyed between March 3 and April 8, 1944. His first victory flying the P-51 was on 3 March, when he claimed a Do 217 in the Wittenberg area. Together with his occasional wingman
John T. Godfrey, they were known as 'Captains Courageous', 'The Two-Man Air Force', and 'Damon and Pythias'. On a March 8, 1944 mission near Berlin, Gentile and Godfrey teamed up to claim six Bf 109s between them. Gentile was awarded the Distinguished Service Cross for that mission. awards the
Distinguished Service Cross to Gentile (left) and Colonel
Donald Blakeslee on April 11, 1944. After downing three more planes on April 8, he was the top scoring
8th Air Force pilot when he crashed his P-51, "Shangri-La", on April 13, 1944, while buzzing the 4th FG's Debden airfield for a group of assembled press reporters. Blakeslee immediately grounded Gentile as a result, and he went back to the US for a planned tour selling
war bonds. In 1944, Gentile co-wrote with well-known war correspondent
Ira Wolfert One Man Air Force, an autobiography and account of his combat missions. Gentile's initial claim of 30 aircraft destroyed (including 7 on the ground) was later reduced to a final tally of 19.83 aerial victories and 3 damaged, with 6 ground kills, in 350 combat hours flown plus the two victories claimed while with the RAF Eagle Squadron. ==Post war==