Japan, Manchuria, and Thailand (12) used the Ki-27.
The Ki-27 first arrived in China in March 1938. In the CBI (China Burma India) theater the Ki-27 was known as the "Abdul."
- Sentais: 1st, 4th, 5th, 9th, 11th, 13th, 18th, 21st, 24th, 33rd, 50th, 54th, 59th, 63rd, 64th, 70th, 77th, 78th, 85th,87th, 144th, 245th
- Dokuritsu Dai Shijugo Chutais: 9th, 10th, 28th, 47th, 84th
- Kyo-iku Hikotais: 5th Lensei Hikotai
- Akeno Army Fighter Training School
Against Russia in May - September 1940, during the Nomonham Incident, the Ki-27 pilots claimed 1,340 Russian aircraft shot down. Revised figures place this to be actually around 200 / 450.
There were five Sentais that were involved in the fighting: 1st, 11th, 24th, 59th, 64th.
South West Pacific
In December 1941 the Ki-27s supported the Japanese invasion of the Philippines, Malaya Burma, and the Netherlands East Indies. These were the 1st, 11th, 50th, 54th, and 77th Sentais.
Once the Ki-27 was withdrawn from front line combat, they were used for defense of the Japanese home islands and training. Typically the wheel spats were removed and the tail skid replaced by a wheel.
As a kamikaze aircraft it could carry a 1,102 lb / 500 kg bomb.