A panzerwerfer is a big truck that can shoot rockets out the back. It was used during World War II to attack the enemy with lots of explosions all at once. Think of it like a really big and loud fireworks show, but instead of pretty colors, it was meant to cause destruction. The panzerwerfer could shoot over 10 rockets at a time, which made it very scary to the soldiers fighting against it. It was important for armies to have these types of weapons to protect themselves and attack the other side.