The Atlas Missile was an early intercontinental ballistic missile (ICBM) developed by the United States during the Cold War. It was designed to deliver nuclear warheads over long distances, with a range of about 5,500 miles. The missile was first launched in 1956 and became operational in 1959, serving as a key component of the U.S. strategic deterrent. The Atlas was a liquid-fueled missile, which required extensive ground support for fueling and launch operations. It was eventually phased out in the early 1960s, replaced by more advanced missile systems like the Minuteman missile. Despite its short service life, the Atlas played a significant role in the development of modern missile technology.