Figures provided by GC of the infamous GWC.
Two flag teams. Each regimental headquarters would need one.
High-level command teams. These would lead the division and regimental headquarters.
Low-level command teams, usually the battalion commanders.
Staff radio wagon. Found at regimental headquarters.
Type 41 75mm infantry guns, usually a regimental support gun.
Type 98 20mm AA machine cannons.
37mm AT guns. These seem to be German PaK 36 models, but they are standing in for the standard Japanese Type 94 37mm AT gun. Perhaps they are German exports captured from the Chinese?
Type 92 70mm battalion guns. These would be attached to battalion headquarters.
Type 97 81mm mortars. These might take the place of the 70mm battalion guns.
Light limbers for moving any light guns.
Bicycle-mounted infantry teams. These would serve as reconnaissance elements for battalions.
Enough medium machine-gun teams to outfit two or three regiments.
Weapons teams, used in support of each infantry company. These represent a combination of machine-guns and mortars.
The mass of infantry teams. There are barely enough here for a healthy infantry regiment.
Infantry teams close up.