Japanese Infantry Rocket Artillery of World War II - YouTube

https://www.youtube.com/watch?v=cenB9b0uxnM

Japanese Rocket Artillery of World War II Shisei four Formula 7.cm試製四式七糎噴進砲 – Type 4 20.cm Rocket Mortar 四式二十糎噴進 Rocket Mortar from 1943 – Type 4 40.cm Rocke...