4th Division (Japan)

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

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 raised on 15 August 1962.

Organization

4th Division, in Kasuga
- 4th Division HQ, in Kasuga
- 4th Tank Battalion, in Kusu, with four squadrons of Type 74 tanks
- 16th Infantry Regiment ^{note 1}, in Ōmura, with Type 96 Armored Personnel Carriers
- 19th Infantry Regiment, in Kasuga
- 40th Infantry Regiment, in Kitakyūshū
- 41st Infantry Regiment, in Beppu
- 4th Artillery Regiment, in Kurume
  - 1st Artillery Battalion, with three batteries of FH-70 155mm towed howitzers
  - 2nd Artillery Battalion, with three batteries of FH-70 155mm towed howitzers
  - 3rd Artillery Battalion, with three batteries of FH-70 155mm towed howitzers
  - 4th Artillery Battalion, with three batteries of FH-70 155mm towed howitzers
  - 5th Artillery Battalion, with four batteries of FH-70 155mm towed howitzers
- Tsushima Garrison, in Tsushima
- 4th Reconnaissance Battalion, in Kasuga, with Type 87 armored reconnaissance vehicle
- 4th Anti-Aircraft Artillery Battalion, in Kurume, with Type 81 and Type 93 Surface-to-air missile systems
- 4th Combat Engineer Battalion, in Ōmura
- 4th Signal Battalion, in Kasuga
- 4th Aviation Squadron, in Yoshinogari, flying UH-1J and OH-6D helicopters
- 4th NBC Protection Battalion, 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.