The M41 'Walker Bulldog' (officially 76-mm Gun Tank, M41) is an American Light tank built by Cadillac between 1951 and 1954

The M41 is the tank used in the movie by the US Army during the fight against the Iron Giant. All of them were destroyed, the 76mm guns having no effect upon the giant. Just before the discussion on a nuclear missile from the nuclear submarine USS Nautilus, several destroyed and twisted vehicles, presumably M41s, can be seen.