The 30 cm Raketenwerfer 56 served with units of the Nebeltruppen, the German equivalent of the U.S. Army's Chemical Corps. Just as the Chemical Corps had responsibility for poison gas and smoke weapons that were used instead to deliver high-explosives during the war so did the Nebeltruppen. The name "Nebelwerfer" is best translated as "Smoke Mortar". For further information please click here.
You can download this paper model template here: WWII 30 cm Raketenwerfer 56 Multiple Rocket Launcher Free Paper Model Download [Box] [Gavitex] [Ge.tt]