Battle of Oban

The Battle of Oban was an engagement fought on the planet Oban in July 16, 2558. It was waged between the Prometheans and their Covenant religious followers and the United Nations Space Command.

Background
In a plot to aquire the other half of the Janus Key onboard the UNSC Infinity, Dr. Catherine Halsey and Jul 'Mdama launched an offensive against the UNSC solely in order to draw the Infinity out into a vulnerable position.

The battle
After the planet was attacked by the Covenant and their Promethean allies, a joint Spartan-UNSC Marine Corps operation was deployed in response to the attack. During the battle, Spartan Thorne was ambushed by a Promethean Knight but he was saved by Commander Palmer. With the Promethean's presence, Palmer ordered all UNSC forces to search and find Jul 'Mdama. Meanwhile, Spartan Joel Thomas ordered an airstrike on two Type-44 Phantoms near Palmer's position. Palmer ordered Thorne to get to a M12 Warthog LRV and pursue the Phantoms, but they were ambushed and pursued by Promethean Crawlers. They dispatched several of the Crawlers and Palmer jumped out of a cliff, directly above the Phantoms. The Warthog landed on the ground, injuring Thorne, and the Phantoms prepared to shoot their Heavy plasma cannons at them. However, a GA-TL1 Longsword appeared, destroying both Phantoms, and saving Palmer's and Thorne's lives. It was noted that Jul's forces were able to lightly damage the new power station and pause the planet's colonization efforts.

List of appearances

 * Halo: Escalation