TO&E drawing, Japanese regimental gun company of Type B infantry regiment (1929)

The Imperial Japanese Army constantly faced shortages of infantry heavy weapons. This led to the situation, when new organization was created without providing all the weapons, necessary for it.

Sometimes shortages were so severe, that quite unusual units were created - like this regimental gun company of Type B infantry regiment in 1929.

Unlike regimental gun company of Type A infantry regiment, described here: https://vijsko.blogspot.com/2026/05/to-drawing-japanese-regimental-gun.html - company lacked mortars and there was no weapons to replace them. So 2 mortar platoons were armed with rifles and were provisionally used as infantry.

This "gun-infantry" company, apparently, was not mentioned in any tactical manuals, as it was provisional organization until more heavy weapons will be available. 

TO&E drawing, Japanese regimental gun company of Type A infantry regiment (1929)

 

This organization was introduced for the new regimental heavy weapons: Type 11 37 mm infantry gun and  Type 11 70 mm infantry mortar, officially adopted in the 11th year of the Emperor Taishō's reign (= 1922).

Note, this is wartime organization only. In peacetime Japanese infantry regiment had only 1 heavy  weapons platoon (1 gun and 1 mortar) in the regimental machine-gun company.

Type 11 37 mm infantry gun 

Type 11 70 mm infantry mortar