The use of multiple rocket launchers by the German army during the last world war was quite extensive, thanks to the low production cost and the remarkable effectiveness of these weapons. The main drawback was the poor mobility of these systems that exposed them to enemy reaction fire, so this mobile version of the 150 mm rocket launcher, model 42 (the most widespread) mounted on the chassis of the Sd. Kfz. 4 Maultier half-track, which was able to ensure good off-road mobility, was made. The vehicle was also equipped with a light anti-splinter armour to protect the servants.
