The Battle of Installation 07 occurred in August of 2552. The events occurred after the battle of Reach when the UNSC Prowler Javelin made a blind jump. She found herself outside installation 07. There were 37 troops aboard the Javelin. Meanwhile the Covenant Cruiser Holy Radiation followed the Javelin and was packed with 2,000+ troops. The Monitor of the Installation, 743 Probable Injustice, begins to mobilize the setinal force to combat a rising threat.