Seige of Alpha Centauri

"This is one of the bloodiest campaigns witnessed by Sangheli or Human eyes."

- Thel Vadam'ee commenting on the battle. The Siege of Alpha Centauri was a massive battle that took place in the Alpha Centauri System. The battle wasn't nearly as devastating as Reach, but ended in a bloody victory for the Covenant Empire.

Stellar Skirmishes
The battle opened with a Remote Scanning Outpost adminstrator discovering a small Covenant fleet entering normal space about 6 AUs from Scylla. A full complement of UNSC frigates and destroyers began pounding the first wave of Covenant. When the second wave showed up, with more than a hundred ships, the UNSC ACA Fleet was hammered. Ship after ship was downed during the spatial fighting. Eventually, the fleet retreated back to Scylla, watching the Covenant begin glassing the planet Hive.

Uprooting
"Yes..... we have found the root! Let the extinction of this vile weed commence!"

- The Lesser Prophet of Regret, thinking he had found the Human homeworld. The Covenant Third Fleet of Denouncing Clairvoyance descended upon Scylla's northern hemisphere and attacked the city of New Omaha. Human planetary based MAC guns made a futile attempt to drive off the fleet, but to no avail. The first Covenant advance troopers landed and began destroying the city. Evacuation sirens sounded as the CCS Battlecruisers began glassing the downtown area. UNSC military troops began a quick strike mission against the Unggoy and Kig-Yar regiment, but were driven off by snipers and banshee bombers.