Flakpanzer IV Wirbelwind - Executive Edition 1:28 #2593Wirbelwind was a German self propelled anti aircraft gun used during World War II. It was based on the Panzer IV tank chassis and was armed with a four barrel 2cm Flakvierling 38 anti aircraft gun. The Wirbelwind could fire at high speed at air targets, providing anti aircraft support for ground units. It was part of a wider family of anti aircraft vehicles used by the German armed forces in various combat roles. Its production began in difficult war