Japanese Island Warfare Division
Divisional Troops
Divisional Headquarters
Divisional Signals Unit
Tank Company
Ordnance Unit
Intendance (Supply) Unit
One Infantry Regiment Group, Type "A", comprised of;
Regimental Headquarters & Train
Signal Company
Engineer Company
Medical Company
Tank Company - with two Platoons, each of four light tanks, and a Maintenance Section.
Machine Cannon Company - with six 20-mm automatic guns in three Platoons of two guns each.
Three Infantry Battalions, Type "A" - click on The Japanese Island Warfare Battalion link for more details.
Two Infantry Regiment Groups, Type "B", each comprised of;
Regimental Headquarters & Train
Signal Company
Engineer Company
Medical Company
Artillery Battalion - with twelve towed 75-mm guns, divided into three Batteries with four guns per Battery (third Battery could be re-equipped with four towed 105-mm howitzers).
Three Infantry Battalions, Type "B" - click on The Japanese Island Warfare Battalion link for more details.
Transport
Motor Transport Unit
Sea Transport Unit - with an Escort Company, four Transport Companies and a Material Depot.
Medical
Field Hospital
Water Purification Unit
Points of note
The Allies began to recognise this type of Division during the latter half of 1944. There was some discussion as to whether it was an experimental type of formation or what could be expected to be encountered in the future.
Key developments were the abolition of the Field Artillery Regiment, with guns now subordinated directly to the two defensive Regiments, and the adoption of the Regimental Group which included elements of the previous Divisional Engineer and Medical units.
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Japanese Divisional Organisations