11-B1 intercontinental ballistic missile (Earth-8573)

The 11-B1 intercontinental ballistic missile is an intercontinental ballistic missile of the UNSC Marine Corps.

Overview
Developed during the First Contact War, the 11-B1 intercontinental ballistic missile was devised solely for long-range, high-yield nuclear strike against Covenant ground vehicles. Housed in missile silos, they are powerful enough to cause dozens of megatons in nuclear damage, and are reinforced in strikes carried by the UNSC Defense Force.

Many of these missiles were being stored at the Marine facility Kupiga Simu, in Southern Africa, on Earth.