The Kawasaki Ki-10 saw widespread Japanese Army Air Force service. It was used in combat in China Manchuria during the Sino-Japanese conflict and during the Nomonhan Incident against Russian forces. It was the mainstay of the Army fighter element until 1940. When the Pacific War broke out it was already relegated to training and other secondary roles but returned to a brief first-line service for patrol and reconnaissance duties over both the Japanese home land and main-land China during the early months of 1942.

Versions (with no. built):
Ki-10 (4) – Prototypes, completed in March 1935.
Ki-10-I, Army Type 95 Fighter Model 1 (300) – Initial production, which started in December 1935 and was completed in October 1937.
Ki-10-II prototype (1) – Modified Model 1 with lengthened fuselage and increased wingspan.
Ki-10-II Model 2 (280) – Production model replacing the Ki-10-I. Production started in October 1937 and was completed in December 1938.
Ki-10-I KAI Prototype (1) – Improved Ki-10-I with repositioned radiator.
Ki-10-II KAI (2) – Prototypes of aerodynamically improved Ki-10-II as Ki-10-I KAI with an 850 hp Kawasaki Ha-9-IIb.

The Kawasaki Ki-10 saw service in: Japan (IJAAF).

Total production: 588

Technical details Kawasaki Ki-10
Type:____________Fighter
Crew:____________1
Span:____________10.02 m
Lenght:__________7.55 m
Engine:__________Kawasaki Ha-9-IIa / 850 hp
Max speed:_______400 km/h at 3000 m
Service ceiling:_11500 m
Range:___________1100 km
Armament:________2x7.7 mm Type 89 fixed forward firing machine guns

Sources:
Combat Aircraft of World War Two - Elke C. Weale, John A. Weale and Richard F. Barker, 1977 Lionel Leventhal Limited, ISBN 0-946495-43-2
The Complete Book of Fighters - William Green and Gordon Swanborough, Greenwich Editions, London, ISBN 0-86288-220-6