The M-29 Davy Crockett

When something is named for Davy Crockett it usually means it mindblowingly awesome. Developed during the Cold War, the birthplace for other doomsday devices, the Davy Crockett was a mass produced artillery weapon that fired nukes. As in it hurled Nuclear devices at commies.

Don't let the toy like warhead fool you it could level a city.

These things went as far as to mass produced before England chimed in about how terrifyingly bad of an idea that was. Now all the Davy Crocketts they do is collect dust in museums around the globe. I personally got a chance to see one and it looks no less silly in really life.