1953年5月美軍成功測試大炮發射戰術原子彈，共造了20尊這樣的大炮用於韓戰，但因中方接受了美軍停火條件而未派上用場

視頻提供者說明：

The Atomic Cannon, at 280 mm, was the largest nuclear capable mobile artillery piece manufactured by the United States. On May 25, 1953, a 280 mm cannon fired an atomic projectile a distance of 7 miles at the Nevada Test Site. Twenty 280 mm cannons were manufactured. None were used in battle.