The 365th was assigned to Ninth Air Force in England, flying its first combat mission on 22 February 1944. The 365th was one of the most successful P-47 groups of the Ninth Air Force when it came to air combat. It flew its last mission on 8 May 1945. The 365th was one of the most successful P-47 groups of the Ninth Air Force when it came to air combat, and a total of 29 enemy aircraft were credited as shot down during the four months the group operated from Beaulieu.