If you're interested in what it was like serving in a Stuart or, rather, a "Honey" - the British name for the M3 - in the western desert campaign have a read of "Brazen Chariots". The Stuart was also the "Haunted Tank" in the comic book of the same name, capable thanks to the power invested in it via the ghost of Jeb Stuart, of putting Tiger tanks out of commission using only its 30mm cannon.
37mm gun. Loved Haunted Tank in the Sgt Rock comics.