are the rockets in halls of montezuma actually used by the japanese?

Question

In the movie halls of montezuma the marines need to destroy a Japanese rocket base. did the japnese ever have these rockets and please give me more information on them. I know alot about WWII but i have neard heard of these things.

Answer 1

Have you ever heard of a Katuysha or a Panzerwerfer?-the Japanese had similar weapons.