Battle Over Hokkaido. A mod that has the JGSDF from the Cold War and current.
Step to make this mod work or playable:
1. Right click on on your ARMA: Cold War Assault on Steam
2. Click Properties
3. Put the folder to the ARMA Cold War Assault directory
4. On Launch options type this. -nosplash -mod=@BOH
You're good to go! Feel free to comment if there's something wrong.