The Riz'ro Earth Bombing was eighth battle of the Zann Consortium War. It was also the first battle of the war on Riz'ro universe. The battle began when an unloaded bus next to a marketplace in the city of Ociania exploded and instantly killed 3500 civilians and workers around the radius of the explosion. The Citadel Alliance's military immediately responded by deploying 2,500 soldiers and 50 tanks led by Donald Anderson, Citadel Alliance's main military official. 40 police officers also attended the scene.