Type 91 105 mm howitzer

The , also known as a "10-cm" gun,Rottman, Gordon L. (2005). Japanese Army in World War II: Conquest of the Pacific 1941-42, p. 50; excerpt, "Japanese '10cm' weapons were actually 105mm weapons." was a howitzer used by the Imperial Japanese Army (IJA).This field gun type was named "ninety-one" because it was first built in 1931; and 1931 was the 2591st year since Emperor Jimmu, the first Emperor of Japan.  The Japanese Imperial year was Kōki 2591 (皇紀2591年). 

History and development
Type 91s began to be made in 1931.US War Dept. (1944).  "Model 91 (1931) 105-mm howitzer," Handbook on Japanese Military Forces, p. 225. 

Combat record
Type 91 howitzers were used in the Second Sino-Japanese War and World War II.

Related pages 
 Artillery of Japan
 List of field guns
 List of heavy mortars
 List of howitzers

References

Other websites

 Type 91 on Taki's Imperial Japanese Army page 
 US Technical Manual E 30-480

Category:Japanese weapons
Category:Howitzers