The Bombing of Mars was the pivotal event that caused the start of the Earth Alliance Civil War. It began when the Martian government refused to implement martial law as ordered by President Clark. In response, Clark sent his forces to attack Mars. A squadron of Thunderbolt Starfuries was sent to the surface with orders to bomb civilian targets. Despite pleas over the radio from below, the Starfuries launched their missiles, killing hundreds of innocent civilians.
In response to these atrocities, the colonies of Promixa and Orion declared independence from Earth.