Leasath-Aurelia War Edit
Terminus island was taken by Leasath in the early stage of the war and served as a Supply Station for the Glepnir Aerial Fortress. This Island is a vital to Leasath and is heavily guarded by their Air Force.
The Gleipnir flew to this station after supporting a Leasath Bomber Unit, in an attack which targeted Aubrey Air Base. The Gleipnir launched an SWBM (Shock Wave Ballistic Missile) nearly destroying Gryphus Squadron. The First and Second Aurelian Fleets are deployed, along with Aurelian Pilot, Gryphus 1 and his wingmen; to Terminus Island to stop the Gleipnir's attacks.
Mission 6A: Midnight SunEdit
The First and Second Fleets were destroyed by the Gleipnir's Shock Cannon and a few of the Aurelian Fighters. However, Gryphus 1 engaged the Gleipnir, managing to destroy its Digital Optical Stealth (DOS) and SWBM Launchers. The Gleipnir climbed high into the atmosphere and left the battle area, after sustaining this damage. It flew to Santa Elva for emergency repairs.
Mission 6B: Ice BoundEdit
In another scenario, however, the Aurelians attempted to rescue an Aurelian scientist who obtained valuable information on the Gliepnir using the Naiad, a submarine in the Aurelian Navy. To accomplish this, several other Navy vessels were deployed to divert a Leasathian fleet's attention. Gryphus One was deployed to protect the diversionary fleet. After destroying all hostile vessels, two E-767's were sent out to aid fighters to destroy the Naiad. After Gryphus One destroyed them, the infiltration unit (presumably a black ops unit) succeeded in rescuing the scientist. They returned to the Naiad, and after setting asil again, struck an undersea mine, damaging the diving control system and rudder. The Naiad was headed right for an iceberg, and so Gryphus One had to destroy it. After that, he defended the submarine by destroying attacking stealth fighters.
Ace Combat X: Skies of Deception (the game) itself.
Official Ace Combat X Website by "Project Aces" -http://www.acecombat.jp/ace-x/index.htm