In WWII, rocket artillery was still in its infancy, though several effective systems were developed by both sides of the conflict (e.g. Russian Katyusha and German Nebelwerfer). One of GermanyÔÇÖs first rocket weapon systems was the Schweres Wurfgera"t 41, which translates as ÔÇ£heavy throwing apparatusÔÇØ.