Trumpeter 1/35 Trumpeter Soviet 2B7R Multiple Rocket Launcher BM13 HMMDescription Katyusha multiple rocket launchers are a type of rocket artillery first built and fielded by the Soviet Union in World War II. Multiple rocket launchers such as these deliver explosives to a target area more quickly than conventional artillery, but with lower accuracy and requiring a longer time to reload. They are fragile compared to artillery guns, but are inexpensive and easy to produce. Katyushas of World War II, were usually mounted