These are the only tests that where the missile contained a armed missile.Frigate Bird was the only US test of an operational ballistic missile with a live warhead. This test involved firing a Polaris A1 missile from a ballistic missile submarine. The missile was launched by the USS Ethan Allen (SSBN-608) at 13:18 (local) from a position 1500 nm east-northeast of Christmas Island. The re-entry vehicle (RV) and warhead flew 1020 nm downrange toward Christmas Island before re-entering the atmosphere 12.5 minutes later, and detonating in an airburst at 11,000 feet. The system tested was a combination of a Polaris A1 SLBM, and a W-47Y1 warhead in a Mk-1 RV.The missile/RV demonstrated an accuracy on the order of 2200 yards.When the U.S. dismissed the nuclear capacity of China, the latter did fire a nuclear loaded missile and let it detonate.The first Chinese DF-2 failed in its launch test in 1962, leading to the improved DF-2A. The DF-2A was used to carry out China's test of a live warhead on a rocket in 1966 (detonated in the atmosphere above Lop Nor), and was in operational service since late 1960s. All DF-2 were retired from active duty in the 1980s
www.youtube.com/watch?v=hOE2m5NDCSgDF-2A (A bit of Chinese Propaganda)
www.youtube.com/watch?v=01WpGDwSPpgFrigate Bird-Polaris A1