Apocalypse-class nuclear missile

Apocalypse-class nuclear missiles were a type of nuclear missile used by the Terran Confederacy before the Great War. Due to the destruction of Korhal, the Confederacy began using much smaller nukes.

The Destruction of Korhal
The colonists of Korhal IV rebelled against their former masters, the Terran Confederacy. The latter resorted to assassinating its first leader with ghosts but still failed to control the rebellion. The Confederacy resorted to firing a thousand Apocalypse-class nuclear missiles at Korhal from the distant Confederate capital of Tarsonis, killing four million people and destroying most life on the planet and setting the forests on fire.

Political Fallout
After the Korhal incident, full-scale use of nuclear weapons were banned on habitable worlds. The Confederacy began using smaller missiles, targeted by ghosts.