 On 7 April 1945, the 15th flew its first Very Long Range (VLR) mission to Japan, providing fighter escort for the Boeing B-29 Superfortress bombers that attacked the Nakajima aircraft plant near Tokyo, and was awarded the Distinguished Unit Citation.In late April and early May that year, the 15th struck Japanese airfields on Kyūshū to curtail the enemy's suicide attacks against the invasion force on Okinawa and also hit enemy troop trains, small factories, gun positions, and hangars in the Bonins and Japan.During the summer of 1945, the 15th Fighter Group (along with the 21st Fighter Group and the VII Fighter Command) were reassigned to Twentieth Air Force.