The M40 NIMRÓD self-propelled armored autocannon was constructed and
redesigned by Hungarian engineers of Swedish origin. This armored
fighting vehicle was originally designed for antitank and antiaircraft
role, but from 1943 it was used against tanks and self-propelled guns
only for self defense. However, the NIMRÓD proved to be an excellent
self-propelled antiaircraft weapon and has been very effective in the
fire support of own infantry units. It was a real Hungarian Flakpanzer
of WW2.