30 cm Nebelwerfer 42

The 30 cm Nebelwerfer 42 (30 cm NbW 42) was a German multiple rocket launcher used in the Second World War. It 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". It saw service from 1943–1945 in all theaters except Norway and North Africa.
Description.
The "30 cm NbW 42" was a six-barreled rocket launcher mounted on a two-wheeled carriage converted from the launcher for the 28/32 cm Nebelwerfer 41 by changing the open metal launcher frame. Its "30 cm Wurfkörper 42 Spreng (explosive missile)" rocket was spin-stabilized and electrically-fired. The rockets had a prominent exhaust trail that kicked up a lot of debris, so the crew had to seek shelter before firing. This meant that they were easily located and had to displace quickly to avoid counter-battery fire. The rockets were fired one at a time, in a timed ripple, but the launcher had no capability to fire single rockets.
The same rocket was used in the 30 cm Raketenwerfer 56 launcher.
Organization and use.
The "30 cm NbW 42" was organized into batteries of six launchers with three batteries per battalion. These battalions were concentrated in independent "Werfer-Regiments" and "Brigades". It saw service on the Eastern Front, Italian Campaign and the defense of France and Germany from 1943–1945.