Tactical Nuclear Weapons Go Back to Artillery M29 Davy Crockett Weapon SystemThe M29 Davy Crockett was a portable nuclear weapon system used by U.S. forces in the 1960s, capable of firing small nuclear warheads. It was intended for tactical battlefield use but was retired due to its limited range and high risks. M65 atomic cannonThe M65 Atomic Cannon, nicknamed "Atomic Annie," was a large artillery piece designed to fire nuclear shells. Deployed in the 1950s, it was quickly rendered obsolete by advancements in missile technology.