4th Division (Japan)

**4th Division**
4th Division
	4th Division Distinctive Unit Insignia
Active	15 August 1962 – present
Country	Japan
Branch	Japan Ground Self-Defense Force
Type	Infantry division
Part of	Western Army
Garrison/HQ	Kasuga
Commanders
Current; commander	Lt. Gen. Akira Fukatsu

The 4th Division (第4師団) is one of nine active divisions of the Japan Ground Self-Defense Force. The division is subordinated to the Western Army and is headquartered in Kasuga, Fukuoka. Its responsibility is the defense of the Fukuoka, Nagasaki, Ōita and Saga prefectures.

The division was established on 15 August 1962.

Organization

4th Division, in Kasuga
- 4th Division HQ, in Kasuga
- Western Army Tank Unit, in Kusu, with two squadrons of Type 10 main battle tanks (administrative control during peacetime)
- 16th Infantry Regiment ^{note 1}, in Ōmura, with Type 96 Armored Personnel Carriers
- 40th Infantry Regiment, in Kitakyūshū
- 41st Infantry Regiment, in Beppu
- Tsushima Area Security Force, in Tsushima
- 4th Reconnaissance Combat Battalion, in Kasuga, with Type 16 maneuver combat vehicles, and Type 87 armored reconnaissance vehicles
- 4th Anti-Aircraft Artillery Battalion, in Kurume, with Type 81 and Type 93 Surface-to-air missile systems
- 4th Engineer Battalion (Combat), in Ōmura
- 4th Signal Battalion, in Kasuga
- 4th Aviation Squadron, in Yoshinogari, flying UH-1J and OH-6D helicopters
- 4th NBC Protection Company, in Kasuga
- 4th Logistic Support Regiment, in Kasuga
  - 1st Maintenance Battalion
  - 2nd Maintenance Battalion
  - Supply Company
  - Medical Company
  - Transport Company

note 1: Infantry Regiments have only battalion strength.