So, recently I found interesting doc about use reactive launchers by Japanese side.
Its stationary gun, which allow to lunch a 200-mm roket (close to a soviet Katusha BM-13 something)

This is a report of Far east front:
A mortar for a rocket launcher.
The Japanese are currently conducting experiments to launch a rocket. This mortar is a regular mortar that does not have a bottom part. Instead of the bottom part, there is a limiter that holds the rocket projectile in the lower part of the mortar. The length of the mortar is 2470 mm, the weight is 250 kg. The mortar has a lifting mechanism that allows you to give the mortar an elevation angle from 18 degrees to 05 (perhaps poorly written). A sight from a 150 mm type 96 mortar is used to aim the mortar. The mortar is fired from 900 to 1600 meters. The mortar is transported on three packhorses.
Photos from a report:



Maybe description for some another gear, I will look closely. But this launcher contains 60 kg air bomb to through for sure.
It will be more interesting then a heavy mg. Some mortar Japs squad could build such a thing, don’t you think
We have some reactive launcher for 1.5 km but it keep firing at 20 meters) bm track.
- Yes
- No
