11-B1 intercontinental ballistic missile (Earth-2042)

The 11-B1 intercontinental ballistic missile was a missile used by the GRSC Armed Forces during the Clone Wars for long-range high-yield nuclear strikes against ground-based targets. They are capable of causing megatons of nuclear damage. 11-B1s are housed in missile silos, reinforced against military strikes and normally staffed with a GRSC security detail.

The 11-B1 was considered obsolete prior to the Galactic Civil War, due to the relative stability within the Galactic Empire. They were seen as unnecessary because of the resulting large-scale destruction, damaged ecosystem, nuclear fallout and radiation that follows the detonation of a 11-B1. However, during the war, 11-B1s were used as a last-resort weapon against Rebel forces that evaded planetary MAC defense weaponry.

Source

 * https://www.halopedia.org/11-B1_intercontinental_ballistic_missile