 Towards the end of the war, remaining Ki-21s were used by "Giretsu" Special Forces in strikes against American forces in Okinawa and the Ryūkyū Islands.One of the noted operations was an attack on the Allied-held Yontan airfield and Kadena airfield on the night of 24 May 1945.Twelve Ki-21-IIb's of the "Daisan Dokuritsu Hikōtai" were dispatched for a strike, each with 14 commandos.